209015980

素因数分解:

$2^2\times 5^1\times {\mathrm{827}}^1\times {\mathrm{12637}}^1$

素因数の和:13473

約数の個数: 24

約数和(自身を含む): 439499088

約数和(自身を除く): 230483108

約数列:

[1, 2, 4, 5, 10, 20, 827, 1654, 3308, 4135, 8270, 12637, 16540, 25274, 50548, 63185, 126370, 252740, 10450799, 20901598, 41803196, 52253995, 104507990, 209015980]

約数ペア:

[(1, 209015980), (2, 104507990), (4, 52253995), (5, 41803196), (10, 20901598), (20, 10450799), (827, 252740), (1654, 126370), (3308, 63185), (4135, 50548), (8270, 25274), (12637, 16540)]