1998280

素因数分解:

$2^3\times 5^1\times {\mathrm{49957}}^1$

素因数の和:49968

約数の個数: 16

約数和(自身を含む): 4496220

約数和(自身を除く): 2497940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 49957, 99914, 199828, 249785, 399656, 499570, 999140, 1998280]

約数ペア:

[(1, 1998280), (2, 999140), (4, 499570), (5, 399656), (8, 249785), (10, 199828), (20, 99914), (40, 49957)]