21357508

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{3529}}^1$

素因数の和:3639

約数の個数: 24

約数和(自身を含む): 40030200

約数和(自身を除く): 18672692

約数列:

[1, 2, 4, 17, 34, 68, 89, 178, 356, 1513, 3026, 3529, 6052, 7058, 14116, 59993, 119986, 239972, 314081, 628162, 1256324, 5339377, 10678754, 21357508]

約数ペア:

[(1, 21357508), (2, 10678754), (4, 5339377), (17, 1256324), (34, 628162), (68, 314081), (89, 239972), (178, 119986), (356, 59993), (1513, 14116), (3026, 7058), (3529, 6052)]