19986155

素因数分解:

$5^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{1163}}^1$

素因数の和:1666

約数の個数: 16

約数和(自身を含む): 27489024

約数和(自身を除く): 7502869

約数列:

[1, 5, 7, 35, 491, 1163, 2455, 3437, 5815, 8141, 17185, 40705, 571033, 2855165, 3997231, 19986155]

約数ペア:

[(1, 19986155), (5, 3997231), (7, 2855165), (35, 571033), (491, 40705), (1163, 17185), (2455, 8141), (3437, 5815)]