181818980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2357}}^1$

素因数の和:2421

約数の個数: 96

約数和(自身を含む): 475372800

約数和(自身を除く): 293553820

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 29, 35, 38, 58, 70, 76, 95, 116, 133, 140, 145, 190, 203, 266, 290, 380, 406, 532, 551, 580, 665, 812, 1015, 1102, 1330, 2030, 2204, 2357, 2660, 2755, 3857, 4060, 4714, 5510, 7714, 9428, 11020, 11785, 15428, 16499, 19285, 23570, 32998, 38570, 44783, 47140, 65996, 68353, 77140, 82495, 89566, 136706, 164990, 179132, 223915, 273412, 313481, 329980, 341765, 447830, 478471, 626962, 683530, 895660, 956942, 1253924, 1298707, 1367060, 1567405, 1913884, 2392355, 2597414, 3134810, 4784710, 5194828, 6269620, 6493535, 9090949, 9569420, 12987070, 18181898, 25974140, 36363796, 45454745, 90909490, 181818980]

約数ペア:

[(1, 181818980), (2, 90909490), (4, 45454745), (5, 36363796), (7, 25974140), (10, 18181898), (14, 12987070), (19, 9569420), (20, 9090949), (28, 6493535), (29, 6269620), (35, 5194828), (38, 4784710), (58, 3134810), (70, 2597414), (76, 2392355), (95, 1913884), (116, 1567405), (133, 1367060), (140, 1298707), (145, 1253924), (190, 956942), (203, 895660), (266, 683530), (290, 626962), (380, 478471), (406, 447830), (532, 341765), (551, 329980), (580, 313481), (665, 273412), (812, 223915), (1015, 179132), (1102, 164990), (1330, 136706), (2030, 89566), (2204, 82495), (2357, 77140), (2660, 68353), (2755, 65996), (3857, 47140), (4060, 44783), (4714, 38570), (5510, 32998), (7714, 23570), (9428, 19285), (11020, 16499), (11785, 15428)]