201781251

素因数分解:

$3^2\times 7^1\times {\mathrm{1021}}^1\times {\mathrm{3137}}^1$

素因数の和:4171

約数の個数: 24

約数和(自身を含む): 333531744

約数和(自身を除く): 131750493

約数列:

[1, 3, 7, 9, 21, 63, 1021, 3063, 3137, 7147, 9189, 9411, 21441, 21959, 28233, 64323, 65877, 197631, 3202877, 9608631, 22420139, 28825893, 67260417, 201781251]

約数ペア:

[(1, 201781251), (3, 67260417), (7, 28825893), (9, 22420139), (21, 9608631), (63, 3202877), (1021, 197631), (3063, 65877), (3137, 64323), (7147, 28233), (9189, 21959), (9411, 21441)]