21417621

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2\times {\mathrm{137}}^1$

素因数の和:253

約数の個数: 24

約数和(自身を含む): 30435072

約数和(自身を除く): 9017451

約数列:

[1, 3, 31, 41, 93, 123, 137, 411, 1271, 1681, 3813, 4247, 5043, 5617, 12741, 16851, 52111, 156333, 174127, 230297, 522381, 690891, 7139207, 21417621]

約数ペア:

[(1, 21417621), (3, 7139207), (31, 690891), (41, 522381), (93, 230297), (123, 174127), (137, 156333), (411, 52111), (1271, 16851), (1681, 12741), (3813, 5617), (4247, 5043)]