18139915

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1\times {\mathrm{313}}^1$

素因数の和:558

約数の個数: 16

約数和(自身を含む): 22291488

約数和(自身を除く): 4151573

約数列:

[1, 5, 67, 173, 313, 335, 865, 1565, 11591, 20971, 54149, 57955, 104855, 270745, 3627983, 18139915]

約数ペア:

[(1, 18139915), (5, 3627983), (67, 270745), (173, 104855), (313, 57955), (335, 54149), (865, 20971), (1565, 11591)]