21244765

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{3343}}^1$

素因数の和:3420

約数の個数: 16

約数和(自身を含む): 26966016

約数和(自身を除く): 5721251

約数列:

[1, 5, 31, 41, 155, 205, 1271, 3343, 6355, 16715, 103633, 137063, 518165, 685315, 4248953, 21244765]

約数ペア:

[(1, 21244765), (5, 4248953), (31, 685315), (41, 518165), (155, 137063), (205, 103633), (1271, 16715), (3343, 6355)]