3987685

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1979}}^1$

素因数の和:2028

約数の個数: 16

約数和(自身を含む): 5322240

約数和(自身を除く): 1334555

約数列:

[1, 5, 13, 31, 65, 155, 403, 1979, 2015, 9895, 25727, 61349, 128635, 306745, 797537, 3987685]

約数ペア:

[(1, 3987685), (5, 797537), (13, 306745), (31, 128635), (65, 61349), (155, 25727), (403, 9895), (1979, 2015)]