20992601

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1\times {\mathrm{233}}^1$

素因数の和:512

約数の個数: 16

約数和(自身を含む): 24605568

約数和(自身を除く): 3612967

約数列:

[1, 7, 61, 211, 233, 427, 1477, 1631, 12871, 14213, 49163, 90097, 99491, 344141, 2998943, 20992601]

約数ペア:

[(1, 20992601), (7, 2998943), (61, 344141), (211, 99491), (233, 90097), (427, 49163), (1477, 14213), (1631, 12871)]