31799920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20921}}^1$

素因数の和:20953

約数の個数: 40

約数和(自身を含む): 77829840

約数和(自身を除く): 46029920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 20921, 41842, 83684, 104605, 167368, 209210, 334736, 397499, 418420, 794998, 836840, 1589996, 1673680, 1987495, 3179992, 3974990, 6359984, 7949980, 15899960, 31799920]

約数ペア:

[(1, 31799920), (2, 15899960), (4, 7949980), (5, 6359984), (8, 3974990), (10, 3179992), (16, 1987495), (19, 1673680), (20, 1589996), (38, 836840), (40, 794998), (76, 418420), (80, 397499), (95, 334736), (152, 209210), (190, 167368), (304, 104605), (380, 83684), (760, 41842), (1520, 20921)]