20538578

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{2131}}^1$

素因数の和:2273

約数の個数: 16

約数和(自身を含む): 31724160

約数和(自身を除く): 11185582

約数列:

[1, 2, 61, 79, 122, 158, 2131, 4262, 4819, 9638, 129991, 168349, 259982, 336698, 10269289, 20538578]

約数ペア:

[(1, 20538578), (2, 10269289), (61, 336698), (79, 259982), (122, 168349), (158, 129991), (2131, 9638), (4262, 4819)]