12899800

素因数分解:

$2^3\times 5^2\times {\mathrm{64499}}^1$

素因数の和:64515

約数の個数: 24

約数和(自身を含む): 29992500

約数和(自身を除く): 17092700

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 64499, 128998, 257996, 322495, 515992, 644990, 1289980, 1612475, 2579960, 3224950, 6449900, 12899800]

約数ペア:

[(1, 12899800), (2, 6449900), (4, 3224950), (5, 2579960), (8, 1612475), (10, 1289980), (20, 644990), (25, 515992), (40, 322495), (50, 257996), (100, 128998), (200, 64499)]