20979741

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{281}}^1\times {\mathrm{607}}^1$

素因数の和:932

約数の個数: 16

約数和(自身を含む): 28804608

約数和(自身を除く): 7824867

約数列:

[1, 3, 41, 123, 281, 607, 843, 1821, 11521, 24887, 34563, 74661, 170567, 511701, 6993247, 20979741]

約数ペア:

[(1, 20979741), (3, 6993247), (41, 511701), (123, 170567), (281, 74661), (607, 34563), (843, 24887), (1821, 11521)]