1990204020

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3079}}^1$

素因数の和:3129

約数の個数: 288

約数和(自身を含む): 7533926400

約数和(自身を除く): 5543722380

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 27, 28, 30, 35, 36, 38, 42, 45, 54, 57, 60, 63, 70, 76, 81, 84, 90, 95, 105, 108, 114, 126, 133, 135, 140, 162, 171, 180, 189, 190, 210, 228, 243, 252, 266, 270, 285, 315, 324, 342, 378, 380, 399, 405, 420, 486, 513, 532, 540, 567, 570, 630, 665, 684, 756, 798, 810, 855, 945, 972, 1026, 1134, 1140, 1197, 1215, 1260, 1330, 1539, 1596, 1620, 1701, 1710, 1890, 1995, 2052, 2268, 2394, 2430, 2565, 2660, 2835, 3078, 3079, 3402, 3420, 3591, 3780, 3990, 4617, 4788, 4860, 5130, 5670, 5985, 6156, 6158, 6804, 7182, 7695, 7980, 8505, 9234, 9237, 10260, 10773, 11340, 11970, 12316, 14364, 15390, 15395, 17010, 17955, 18468, 18474, 21546, 21553, 23085, 23940, 27711, 30780, 30790, 32319, 34020, 35910, 36948, 43092, 43106, 46170, 46185, 53865, 55422, 58501, 61580, 64638, 64659, 71820, 83133, 86212, 92340, 92370, 107730, 107765, 110844, 117002, 129276, 129318, 138555, 161595, 166266, 175503, 184740, 193977, 215460, 215530, 234004, 249399, 258636, 277110, 292505, 323190, 323295, 332532, 351006, 387954, 409507, 415665, 431060, 498798, 526509, 554220, 581931, 585010, 646380, 646590, 702012, 748197, 775908, 819014, 831330, 877515, 969885, 997596, 1053018, 1163862, 1170020, 1228521, 1246995, 1293180, 1496394, 1579527, 1638028, 1662660, 1745793, 1755030, 1939770, 2047535, 2106036, 2327724, 2457042, 2493990, 2632545, 2909655, 2992788, 3159054, 3491586, 3510060, 3685563, 3740985, 3879540, 4095070, 4738581, 4914084, 4987980, 5237379, 5265090, 5819310, 6142605, 6318108, 6983172, 7371126, 7481970, 7897635, 8190140, 8728965, 9477162, 10474758, 10530180, 11056689, 11638620, 12285210, 14215743, 14742252, 14963940, 15795270, 17457930, 18427815, 18954324, 20949516, 22113378, 23692905, 24570420, 26186895, 28431486, 31590540, 33170067, 34915860, 36855630, 44226756, 47385810, 52373790, 55283445, 56862972, 66340134, 71078715, 73711260, 94771620, 99510201, 104747580, 110566890, 132680268, 142157430, 165850335, 199020402, 221133780, 284314860, 331700670, 398040804, 497551005, 663401340, 995102010, 1990204020]

約数ペア:

[(1, 1990204020), (2, 995102010), (3, 663401340), (4, 497551005), (5, 398040804), (6, 331700670), (7, 284314860), (9, 221133780), (10, 199020402), (12, 165850335), (14, 142157430), (15, 132680268), (18, 110566890), (19, 104747580), (20, 99510201), (21, 94771620), (27, 73711260), (28, 71078715), (30, 66340134), (35, 56862972), (36, 55283445), (38, 52373790), (42, 47385810), (45, 44226756), (54, 36855630), (57, 34915860), (60, 33170067), (63, 31590540), (70, 28431486), (76, 26186895), (81, 24570420), (84, 23692905), (90, 22113378), (95, 20949516), (105, 18954324), (108, 18427815), (114, 17457930), (126, 15795270), (133, 14963940), (135, 14742252), (140, 14215743), (162, 12285210), (171, 11638620), (180, 11056689), (189, 10530180), (190, 10474758), (210, 9477162), (228, 8728965), (243, 8190140), (252, 7897635), (266, 7481970), (270, 7371126), (285, 6983172), (315, 6318108), (324, 6142605), (342, 5819310), (378, 5265090), (380, 5237379), (399, 4987980), (405, 4914084), (420, 4738581), (486, 4095070), (513, 3879540), (532, 3740985), (540, 3685563), (567, 3510060), (570, 3491586), (630, 3159054), (665, 2992788), (684, 2909655), (756, 2632545), (798, 2493990), (810, 2457042), (855, 2327724), (945, 2106036), (972, 2047535), (1026, 1939770), (1134, 1755030), (1140, 1745793), (1197, 1662660), (1215, 1638028), (1260, 1579527), (1330, 1496394), (1539, 1293180), (1596, 1246995), (1620, 1228521), (1701, 1170020), (1710, 1163862), (1890, 1053018), (1995, 997596), (2052, 969885), (2268, 877515), (2394, 831330), (2430, 819014), (2565, 775908), (2660, 748197), (2835, 702012), (3078, 646590), (3079, 646380), (3402, 585010), (3420, 581931), (3591, 554220), (3780, 526509), (3990, 498798), (4617, 431060), (4788, 415665), (4860, 409507), (5130, 387954), (5670, 351006), (5985, 332532), (6156, 323295), (6158, 323190), (6804, 292505), (7182, 277110), (7695, 258636), (7980, 249399), (8505, 234004), (9234, 215530), (9237, 215460), (10260, 193977), (10773, 184740), (11340, 175503), (11970, 166266), (12316, 161595), (14364, 138555), (15390, 129318), (15395, 129276), (17010, 117002), (17955, 110844), (18468, 107765), (18474, 107730), (21546, 92370), (21553, 92340), (23085, 86212), (23940, 83133), (27711, 71820), (30780, 64659), (30790, 64638), (32319, 61580), (34020, 58501), (35910, 55422), (36948, 53865), (43092, 46185), (43106, 46170)]