31214420

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1901}}^1$

素因数の和:2731

約数の個数: 24

約数和(自身を含む): 65664648

約数和(自身を除く): 34450228

約数列:

[1, 2, 4, 5, 10, 20, 821, 1642, 1901, 3284, 3802, 4105, 7604, 8210, 9505, 16420, 19010, 38020, 1560721, 3121442, 6242884, 7803605, 15607210, 31214420]

約数ペア:

[(1, 31214420), (2, 15607210), (4, 7803605), (5, 6242884), (10, 3121442), (20, 1560721), (821, 38020), (1642, 19010), (1901, 16420), (3284, 9505), (3802, 8210), (4105, 7604)]