20992600

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2441}}^1$

素因数の和:2500

約数の個数: 48

約数和(自身を含む): 49963320

約数和(自身を除く): 28970720

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 172, 200, 215, 344, 430, 860, 1075, 1720, 2150, 2441, 4300, 4882, 8600, 9764, 12205, 19528, 24410, 48820, 61025, 97640, 104963, 122050, 209926, 244100, 419852, 488200, 524815, 839704, 1049630, 2099260, 2624075, 4198520, 5248150, 10496300, 20992600]

約数ペア:

[(1, 20992600), (2, 10496300), (4, 5248150), (5, 4198520), (8, 2624075), (10, 2099260), (20, 1049630), (25, 839704), (40, 524815), (43, 488200), (50, 419852), (86, 244100), (100, 209926), (172, 122050), (200, 104963), (215, 97640), (344, 61025), (430, 48820), (860, 24410), (1075, 19528), (1720, 12205), (2150, 9764), (2441, 8600), (4300, 4882)]