20627915

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{409}}^1$

素因数の和:563

約数の個数: 32

約数和(自身を含む): 31173120

約数和(自身を除く): 10545205

約数列:

[1, 5, 7, 11, 35, 55, 77, 131, 385, 409, 655, 917, 1441, 2045, 2863, 4499, 4585, 7205, 10087, 14315, 22495, 31493, 50435, 53579, 157465, 267895, 375053, 589369, 1875265, 2946845, 4125583, 20627915]

約数ペア:

[(1, 20627915), (5, 4125583), (7, 2946845), (11, 1875265), (35, 589369), (55, 375053), (77, 267895), (131, 157465), (385, 53579), (409, 50435), (655, 31493), (917, 22495), (1441, 14315), (2045, 10087), (2863, 7205), (4499, 4585)]