210516980

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{26249}}^1$

素因数の和:26659

約数の個数: 24

約数和(自身を含む): 443205000

約数和(自身を除く): 232688020

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 26249, 52498, 104996, 131245, 262490, 524980, 10525849, 21051698, 42103396, 52629245, 105258490, 210516980]

約数ペア:

[(1, 210516980), (2, 105258490), (4, 52629245), (5, 42103396), (10, 21051698), (20, 10525849), (401, 524980), (802, 262490), (1604, 131245), (2005, 104996), (4010, 52498), (8020, 26249)]