15990760

素因数分解:

$2^3\times 5^1\times {\mathrm{399769}}^1$

素因数の和:399780

約数の個数: 16

約数和(自身を含む): 35979300

約数和(自身を除く): 19988540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 399769, 799538, 1599076, 1998845, 3198152, 3997690, 7995380, 15990760]

約数ペア:

[(1, 15990760), (2, 7995380), (4, 3997690), (5, 3198152), (8, 1998845), (10, 1599076), (20, 799538), (40, 399769)]