20581707

素因数分解:

$3^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1\times {\mathrm{557}}^1$

素因数の和:782

約数の個数: 16

約数和(自身を含む): 27989280

約数和(自身を除く): 7407573

約数列:

[1, 3, 109, 113, 327, 339, 557, 1671, 12317, 36951, 60713, 62941, 182139, 188823, 6860569, 20581707]

約数ペア:

[(1, 20581707), (3, 6860569), (109, 188823), (113, 182139), (327, 62941), (339, 60713), (557, 36951), (1671, 12317)]