31781740

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{9749}}^1$

素因数の和:9921

約数の個数: 24

約数和(自身を含む): 67158000

約数和(自身を除く): 35376260

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 9749, 19498, 38996, 48745, 97490, 194980, 1589087, 3178174, 6356348, 7945435, 15890870, 31781740]

約数ペア:

[(1, 31781740), (2, 15890870), (4, 7945435), (5, 6356348), (10, 3178174), (20, 1589087), (163, 194980), (326, 97490), (652, 48745), (815, 38996), (1630, 19498), (3260, 9749)]