20487705

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{195121}}^1$

素因数の和:195136

約数の個数: 16

約数和(自身を含む): 37463424

約数和(自身を除く): 16975719

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 195121, 585363, 975605, 1365847, 2926815, 4097541, 6829235, 20487705]

約数ペア:

[(1, 20487705), (3, 6829235), (5, 4097541), (7, 2926815), (15, 1365847), (21, 975605), (35, 585363), (105, 195121)]