21316375

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{5501}}^1$

素因数の和:5547

約数の個数: 16

約数和(自身を含む): 27465984

約数和(自身を除く): 6149609

約数列:

[1, 5, 25, 31, 125, 155, 775, 3875, 5501, 27505, 137525, 170531, 687625, 852655, 4263275, 21316375]

約数ペア:

[(1, 21316375), (5, 4263275), (25, 852655), (31, 687625), (125, 170531), (155, 137525), (775, 27505), (3875, 5501)]