20187178

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{431}}^1\times {\mathrm{2129}}^1$

素因数の和:2573

約数の個数: 16

約数和(自身を含む): 33125760

約数和(自身を除く): 12938582

約数列:

[1, 2, 11, 22, 431, 862, 2129, 4258, 4741, 9482, 23419, 46838, 917599, 1835198, 10093589, 20187178]

約数ペア:

[(1, 20187178), (2, 10093589), (11, 1835198), (22, 917599), (431, 46838), (862, 23419), (2129, 9482), (4258, 4741)]