20557851

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1\times {\mathrm{421}}^1$

素因数の和:862

約数の個数: 16

約数和(自身を含む): 28216608

約数和(自身を除く): 7658757

約数列:

[1, 3, 41, 123, 397, 421, 1191, 1263, 16277, 17261, 48831, 51783, 167137, 501411, 6852617, 20557851]

約数ペア:

[(1, 20557851), (3, 6852617), (41, 501411), (123, 167137), (397, 51783), (421, 48831), (1191, 17261), (1263, 16277)]