21618160

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{379}}^1$

素因数の和:446

約数の個数: 80

約数和(自身を含む): 54282240

約数和(自身を除く): 32664080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 40, 46, 62, 80, 92, 115, 124, 155, 184, 230, 248, 310, 368, 379, 460, 496, 620, 713, 758, 920, 1240, 1426, 1516, 1840, 1895, 2480, 2852, 3032, 3565, 3790, 5704, 6064, 7130, 7580, 8717, 11408, 11749, 14260, 15160, 17434, 23498, 28520, 30320, 34868, 43585, 46996, 57040, 58745, 69736, 87170, 93992, 117490, 139472, 174340, 187984, 234980, 270227, 348680, 469960, 540454, 697360, 939920, 1080908, 1351135, 2161816, 2702270, 4323632, 5404540, 10809080, 21618160]

約数ペア:

[(1, 21618160), (2, 10809080), (4, 5404540), (5, 4323632), (8, 2702270), (10, 2161816), (16, 1351135), (20, 1080908), (23, 939920), (31, 697360), (40, 540454), (46, 469960), (62, 348680), (80, 270227), (92, 234980), (115, 187984), (124, 174340), (155, 139472), (184, 117490), (230, 93992), (248, 87170), (310, 69736), (368, 58745), (379, 57040), (460, 46996), (496, 43585), (620, 34868), (713, 30320), (758, 28520), (920, 23498), (1240, 17434), (1426, 15160), (1516, 14260), (1840, 11749), (1895, 11408), (2480, 8717), (2852, 7580), (3032, 7130), (3565, 6064), (3790, 5704)]