80428820

素因数分解:

$2^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{8059}}^1$

素因数の和:8567

約数の個数: 24

約数和(自身を含む): 169260000

約数和(自身を除く): 88831180

約数列:

[1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4990, 8059, 9980, 16118, 32236, 40295, 80590, 161180, 4021441, 8042882, 16085764, 20107205, 40214410, 80428820]

約数ペア:

[(1, 80428820), (2, 40214410), (4, 20107205), (5, 16085764), (10, 8042882), (20, 4021441), (499, 161180), (998, 80590), (1996, 40295), (2495, 32236), (4990, 16118), (8059, 9980)]