21181707

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{419}}^1$

素因数の和:603

約数の個数: 24

約数和(自身を含む): 31646160

約数和(自身を除く): 10464453

約数列:

[1, 3, 9, 41, 123, 137, 369, 411, 419, 1233, 1257, 3771, 5617, 16851, 17179, 50553, 51537, 57403, 154611, 172209, 516627, 2353523, 7060569, 21181707]

約数ペア:

[(1, 21181707), (3, 7060569), (9, 2353523), (41, 516627), (123, 172209), (137, 154611), (369, 57403), (411, 51537), (419, 50553), (1233, 17179), (1257, 16851), (3771, 5617)]