81815951

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^2\times {\mathrm{409}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 101725920

約数和(自身を除く): 19909969

約数列:

[1, 7, 17, 41, 119, 287, 409, 697, 1681, 2863, 4879, 6953, 11767, 16769, 28577, 48671, 117383, 200039, 285073, 687529, 1995511, 4812703, 11687993, 81815951]

約数ペア:

[(1, 81815951), (7, 11687993), (17, 4812703), (41, 1995511), (119, 687529), (287, 285073), (409, 200039), (697, 117383), (1681, 48671), (2863, 28577), (4879, 16769), (6953, 11767)]