1640809980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^3\times {\mathrm{443}}^1$

素因数の和:518

約数の個数: 192

約数和(自身を含む): 5400460800

約数和(自身を除く): 3759650820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 90, 95, 108, 114, 135, 171, 180, 190, 228, 270, 285, 342, 361, 380, 443, 513, 540, 570, 684, 722, 855, 886, 1026, 1083, 1140, 1329, 1444, 1710, 1772, 1805, 2052, 2166, 2215, 2565, 2658, 3249, 3420, 3610, 3987, 4332, 4430, 5130, 5316, 5415, 6498, 6645, 6859, 7220, 7974, 8417, 8860, 9747, 10260, 10830, 11961, 12996, 13290, 13718, 15948, 16245, 16834, 19494, 19935, 20577, 21660, 23922, 25251, 26580, 27436, 32490, 33668, 34295, 38988, 39870, 41154, 42085, 47844, 48735, 50502, 59805, 61731, 64980, 68590, 75753, 79740, 82308, 84170, 97470, 101004, 102885, 119610, 123462, 126255, 137180, 151506, 159923, 168340, 185193, 194940, 205770, 227259, 239220, 246924, 252510, 303012, 308655, 319846, 370386, 378765, 411540, 454518, 479769, 505020, 617310, 639692, 740772, 757530, 799615, 909036, 925965, 959538, 1136295, 1234620, 1439307, 1515060, 1599230, 1851930, 1919076, 2272590, 2398845, 2878614, 3038537, 3198460, 3703860, 4317921, 4545180, 4797690, 5757228, 6077074, 7196535, 8635842, 9115611, 9595380, 12154148, 14393070, 15192685, 17271684, 18231222, 21589605, 27346833, 28786140, 30385370, 36462444, 43179210, 45578055, 54693666, 60770740, 82040499, 86358420, 91156110, 109387332, 136734165, 164080998, 182312220, 273468330, 328161996, 410202495, 546936660, 820404990, 1640809980]

約数ペア:

[(1, 1640809980), (2, 820404990), (3, 546936660), (4, 410202495), (5, 328161996), (6, 273468330), (9, 182312220), (10, 164080998), (12, 136734165), (15, 109387332), (18, 91156110), (19, 86358420), (20, 82040499), (27, 60770740), (30, 54693666), (36, 45578055), (38, 43179210), (45, 36462444), (54, 30385370), (57, 28786140), (60, 27346833), (76, 21589605), (90, 18231222), (95, 17271684), (108, 15192685), (114, 14393070), (135, 12154148), (171, 9595380), (180, 9115611), (190, 8635842), (228, 7196535), (270, 6077074), (285, 5757228), (342, 4797690), (361, 4545180), (380, 4317921), (443, 3703860), (513, 3198460), (540, 3038537), (570, 2878614), (684, 2398845), (722, 2272590), (855, 1919076), (886, 1851930), (1026, 1599230), (1083, 1515060), (1140, 1439307), (1329, 1234620), (1444, 1136295), (1710, 959538), (1772, 925965), (1805, 909036), (2052, 799615), (2166, 757530), (2215, 740772), (2565, 639692), (2658, 617310), (3249, 505020), (3420, 479769), (3610, 454518), (3987, 411540), (4332, 378765), (4430, 370386), (5130, 319846), (5316, 308655), (5415, 303012), (6498, 252510), (6645, 246924), (6859, 239220), (7220, 227259), (7974, 205770), (8417, 194940), (8860, 185193), (9747, 168340), (10260, 159923), (10830, 151506), (11961, 137180), (12996, 126255), (13290, 123462), (13718, 119610), (15948, 102885), (16245, 101004), (16834, 97470), (19494, 84170), (19935, 82308), (20577, 79740), (21660, 75753), (23922, 68590), (25251, 64980), (26580, 61731), (27436, 59805), (32490, 50502), (33668, 48735), (34295, 47844), (38988, 42085), (39870, 41154)]