21718040

素因数分解:

$2^3\times 5^1\times {\mathrm{542951}}^1$

素因数の和:542962

約数の個数: 16

約数和(自身を含む): 48865680

約数和(自身を除く): 27147640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 542951, 1085902, 2171804, 2714755, 4343608, 5429510, 10859020, 21718040]

約数ペア:

[(1, 21718040), (2, 10859020), (4, 5429510), (5, 4343608), (8, 2714755), (10, 2171804), (20, 1085902), (40, 542951)]