21179800

素因数分解:

$2^3\times 5^2\times {\mathrm{105899}}^1$

素因数の和:105915

約数の個数: 24

約数和(自身を含む): 49243500

約数和(自身を除く): 28063700

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 105899, 211798, 423596, 529495, 847192, 1058990, 2117980, 2647475, 4235960, 5294950, 10589900, 21179800]

約数ペア:

[(1, 21179800), (2, 10589900), (4, 5294950), (5, 4235960), (8, 2647475), (10, 2117980), (20, 1058990), (25, 847192), (40, 529495), (50, 423596), (100, 211798), (200, 105899)]