21053895

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{163}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 34636800

約数和(自身を除く): 13582905

約数列:

[1, 3, 5, 15, 79, 109, 163, 237, 327, 395, 489, 545, 815, 1185, 1635, 2445, 8611, 12877, 17767, 25833, 38631, 43055, 53301, 64385, 88835, 129165, 193155, 266505, 1403593, 4210779, 7017965, 21053895]

約数ペア:

[(1, 21053895), (3, 7017965), (5, 4210779), (15, 1403593), (79, 266505), (109, 193155), (163, 129165), (237, 88835), (327, 64385), (395, 53301), (489, 43055), (545, 38631), (815, 25833), (1185, 17767), (1635, 12877), (2445, 8611)]