21099800

素因数分解:

$2^3\times 5^2\times {\mathrm{105499}}^1$

素因数の和:105515

約数の個数: 24

約数和(自身を含む): 49057500

約数和(自身を除く): 27957700

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 105499, 210998, 421996, 527495, 843992, 1054990, 2109980, 2637475, 4219960, 5274950, 10549900, 21099800]

約数ペア:

[(1, 21099800), (2, 10549900), (4, 5274950), (5, 4219960), (8, 2637475), (10, 2109980), (20, 1054990), (25, 843992), (40, 527495), (50, 421996), (100, 210998), (200, 105499)]