20015915

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1\times {\mathrm{401}}^1$

素因数の和:622

約数の個数: 16

約数和(自身を含む): 24602400

約数和(自身を除く): 4586485

約数列:

[1, 5, 67, 149, 335, 401, 745, 2005, 9983, 26867, 49915, 59749, 134335, 298745, 4003183, 20015915]

約数ペア:

[(1, 20015915), (5, 4003183), (67, 298745), (149, 134335), (335, 59749), (401, 49915), (745, 26867), (2005, 9983)]