3957220

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{821}}^1$

素因数の和:1071

約数の個数: 24

約数和(自身を含む): 8354808

約数和(自身を除く): 4397588

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 821, 964, 1205, 1642, 2410, 3284, 4105, 4820, 8210, 16420, 197861, 395722, 791444, 989305, 1978610, 3957220]

約数ペア:

[(1, 3957220), (2, 1978610), (4, 989305), (5, 791444), (10, 395722), (20, 197861), (241, 16420), (482, 8210), (821, 4820), (964, 4105), (1205, 3284), (1642, 2410)]