8990120

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{709}}^1$

素因数の和:1037

約数の個数: 32

約数和(自身を含む): 20320200

約数和(自身を除く): 11330080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 709, 1268, 1418, 1585, 2536, 2836, 3170, 3545, 5672, 6340, 7090, 12680, 14180, 28360, 224753, 449506, 899012, 1123765, 1798024, 2247530, 4495060, 8990120]

約数ペア:

[(1, 8990120), (2, 4495060), (4, 2247530), (5, 1798024), (8, 1123765), (10, 899012), (20, 449506), (40, 224753), (317, 28360), (634, 14180), (709, 12680), (1268, 7090), (1418, 6340), (1585, 5672), (2536, 3545), (2836, 3170)]