20899620

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:144

約数の個数: 240

約数和(自身を含む): 79685760

約数和(自身を除く): 58786140

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, 97, 105, 108, 114, 126, 133, 135, 140, 162, 171, 180, 189, 190, 194, 210, 228, 252, 266, 270, 285, 291, 315, 324, 342, 378, 380, 388, 399, 405, 420, 485, 513, 532, 540, 567, 570, 582, 630, 665, 679, 684, 756, 798, 810, 855, 873, 945, 970, 1026, 1134, 1140, 1164, 1197, 1260, 1330, 1358, 1455, 1539, 1596, 1620, 1710, 1746, 1843, 1890, 1940, 1995, 2037, 2052, 2268, 2394, 2565, 2619, 2660, 2716, 2835, 2910, 3078, 3395, 3420, 3492, 3591, 3686, 3780, 3990, 4074, 4365, 4788, 5130, 5238, 5529, 5670, 5820, 5985, 6111, 6156, 6790, 7182, 7372, 7695, 7857, 7980, 8148, 8730, 9215, 10185, 10260, 10476, 10773, 11058, 11340, 11970, 12222, 12901, 13095, 13580, 14364, 15390, 15714, 16587, 17460, 17955, 18333, 18430, 20370, 21546, 22116, 23940, 24444, 25802, 26190, 27645, 30555, 30780, 31428, 33174, 35910, 36666, 36860, 38703, 39285, 40740, 43092, 49761, 51604, 52380, 53865, 54999, 55290, 61110, 64505, 66348, 71820, 73332, 77406, 78570, 82935, 91665, 99522, 107730, 109998, 110580, 116109, 122220, 129010, 149283, 154812, 157140, 165870, 183330, 193515, 199044, 215460, 219996, 232218, 248805, 258020, 274995, 298566, 331740, 348327, 366660, 387030, 464436, 497610, 549990, 580545, 597132, 696654, 746415, 774060, 995220, 1044981, 1099980, 1161090, 1393308, 1492830, 1741635, 2089962, 2322180, 2985660, 3483270, 4179924, 5224905, 6966540, 10449810, 20899620]

約数ペア:

[(1, 20899620), (2, 10449810), (3, 6966540), (4, 5224905), (5, 4179924), (6, 3483270), (7, 2985660), (9, 2322180), (10, 2089962), (12, 1741635), (14, 1492830), (15, 1393308), (18, 1161090), (19, 1099980), (20, 1044981), (21, 995220), (27, 774060), (28, 746415), (30, 696654), (35, 597132), (36, 580545), (38, 549990), (42, 497610), (45, 464436), (54, 387030), (57, 366660), (60, 348327), (63, 331740), (70, 298566), (76, 274995), (81, 258020), (84, 248805), (90, 232218), (95, 219996), (97, 215460), (105, 199044), (108, 193515), (114, 183330), (126, 165870), (133, 157140), (135, 154812), (140, 149283), (162, 129010), (171, 122220), (180, 116109), (189, 110580), (190, 109998), (194, 107730), (210, 99522), (228, 91665), (252, 82935), (266, 78570), (270, 77406), (285, 73332), (291, 71820), (315, 66348), (324, 64505), (342, 61110), (378, 55290), (380, 54999), (388, 53865), (399, 52380), (405, 51604), (420, 49761), (485, 43092), (513, 40740), (532, 39285), (540, 38703), (567, 36860), (570, 36666), (582, 35910), (630, 33174), (665, 31428), (679, 30780), (684, 30555), (756, 27645), (798, 26190), (810, 25802), (855, 24444), (873, 23940), (945, 22116), (970, 21546), (1026, 20370), (1134, 18430), (1140, 18333), (1164, 17955), (1197, 17460), (1260, 16587), (1330, 15714), (1358, 15390), (1455, 14364), (1539, 13580), (1596, 13095), (1620, 12901), (1710, 12222), (1746, 11970), (1843, 11340), (1890, 11058), (1940, 10773), (1995, 10476), (2037, 10260), (2052, 10185), (2268, 9215), (2394, 8730), (2565, 8148), (2619, 7980), (2660, 7857), (2716, 7695), (2835, 7372), (2910, 7182), (3078, 6790), (3395, 6156), (3420, 6111), (3492, 5985), (3591, 5820), (3686, 5670), (3780, 5529), (3990, 5238), (4074, 5130), (4365, 4788)]