21263350

素因数分解:

$2^1\times 5^2\times {\mathrm{163}}^1\times {\mathrm{2609}}^1$

素因数の和:2784

約数の個数: 24

約数和(自身を含む): 39807720

約数和(自身を除く): 18544370

約数列:

[1, 2, 5, 10, 25, 50, 163, 326, 815, 1630, 2609, 4075, 5218, 8150, 13045, 26090, 65225, 130450, 425267, 850534, 2126335, 4252670, 10631675, 21263350]

約数ペア:

[(1, 21263350), (2, 10631675), (5, 4252670), (10, 2126335), (25, 850534), (50, 425267), (163, 130450), (326, 65225), (815, 26090), (1630, 13045), (2609, 8150), (4075, 5218)]