20131325

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 26331648

約数和(自身を除く): 6200323

約数列:

[1, 5, 23, 25, 115, 157, 223, 575, 785, 1115, 3611, 3925, 5129, 5575, 18055, 25645, 35011, 90275, 128225, 175055, 805253, 875275, 4026265, 20131325]

約数ペア:

[(1, 20131325), (5, 4026265), (23, 875275), (25, 805253), (115, 175055), (157, 128225), (223, 90275), (575, 35011), (785, 25645), (1115, 18055), (3611, 5575), (3925, 5129)]