8081840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:454

約数の個数: 80

約数和(自身を含む): 21352800

約数和(自身を除く): 13270960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 409, 494, 520, 760, 818, 988, 1040, 1235, 1520, 1636, 1976, 2045, 2470, 3272, 3952, 4090, 4940, 5317, 6544, 7771, 8180, 9880, 10634, 15542, 16360, 19760, 21268, 26585, 31084, 32720, 38855, 42536, 53170, 62168, 77710, 85072, 101023, 106340, 124336, 155420, 202046, 212680, 310840, 404092, 425360, 505115, 621680, 808184, 1010230, 1616368, 2020460, 4040920, 8081840]

約数ペア:

[(1, 8081840), (2, 4040920), (4, 2020460), (5, 1616368), (8, 1010230), (10, 808184), (13, 621680), (16, 505115), (19, 425360), (20, 404092), (26, 310840), (38, 212680), (40, 202046), (52, 155420), (65, 124336), (76, 106340), (80, 101023), (95, 85072), (104, 77710), (130, 62168), (152, 53170), (190, 42536), (208, 38855), (247, 32720), (260, 31084), (304, 26585), (380, 21268), (409, 19760), (494, 16360), (520, 15542), (760, 10634), (818, 9880), (988, 8180), (1040, 7771), (1235, 6544), (1520, 5317), (1636, 4940), (1976, 4090), (2045, 3952), (2470, 3272)]