4040920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:452

約数の個数: 64

約数和(自身を含む): 10332000

約数和(自身を除く): 6291080

約数列:

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

約数ペア:

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