2009995

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{107}}^1$

素因数の和:159

約数の個数: 24

約数和(自身を含む): 2785104

約数和(自身を除く): 775109

約数列:

[1, 5, 13, 17, 65, 85, 107, 221, 289, 535, 1105, 1391, 1445, 1819, 3757, 6955, 9095, 18785, 23647, 30923, 118235, 154615, 401999, 2009995]

約数ペア:

[(1, 2009995), (5, 401999), (13, 154615), (17, 118235), (65, 30923), (85, 23647), (107, 18785), (221, 9095), (289, 6955), (535, 3757), (1105, 1819), (1391, 1445)]