18404080

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:266

約数の個数: 80

約数和(自身を含む): 45497088

約数和(自身を除く): 27093008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 41, 62, 80, 82, 124, 155, 164, 181, 205, 248, 310, 328, 362, 410, 496, 620, 656, 724, 820, 905, 1240, 1271, 1448, 1640, 1810, 2480, 2542, 2896, 3280, 3620, 5084, 5611, 6355, 7240, 7421, 10168, 11222, 12710, 14480, 14842, 20336, 22444, 25420, 28055, 29684, 37105, 44888, 50840, 56110, 59368, 74210, 89776, 101680, 112220, 118736, 148420, 224440, 230051, 296840, 448880, 460102, 593680, 920204, 1150255, 1840408, 2300510, 3680816, 4601020, 9202040, 18404080]

約数ペア:

[(1, 18404080), (2, 9202040), (4, 4601020), (5, 3680816), (8, 2300510), (10, 1840408), (16, 1150255), (20, 920204), (31, 593680), (40, 460102), (41, 448880), (62, 296840), (80, 230051), (82, 224440), (124, 148420), (155, 118736), (164, 112220), (181, 101680), (205, 89776), (248, 74210), (310, 59368), (328, 56110), (362, 50840), (410, 44888), (496, 37105), (620, 29684), (656, 28055), (724, 25420), (820, 22444), (905, 20336), (1240, 14842), (1271, 14480), (1448, 12710), (1640, 11222), (1810, 10168), (2480, 7421), (2542, 7240), (2896, 6355), (3280, 5611), (3620, 5084)]