8978180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{10949}}^1$

素因数の和:10999

約数の個数: 24

約数和(自身を含む): 19315800

約数和(自身を除く): 10337620

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 10949, 21898, 43796, 54745, 109490, 218980, 448909, 897818, 1795636, 2244545, 4489090, 8978180]

約数ペア:

[(1, 8978180), (2, 4489090), (4, 2244545), (5, 1795636), (10, 897818), (20, 448909), (41, 218980), (82, 109490), (164, 54745), (205, 43796), (410, 21898), (820, 10949)]