21146619

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{17491}}^1$

素因数の和:17538

約数の個数: 16

約数和(自身を含む): 31345664

約数和(自身を除く): 10199045

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 17491, 52473, 227383, 542221, 682149, 1626663, 7048873, 21146619]

約数ペア:

[(1, 21146619), (3, 7048873), (13, 1626663), (31, 682149), (39, 542221), (93, 227383), (403, 52473), (1209, 17491)]