20511775

素因数分解:

$5^2\times {\mathrm{17}}^3\times {\mathrm{167}}^1$

素因数の和:228

約数の個数: 24

約数和(自身を含む): 27185760

約数和(自身を除く): 6673985

約数列:

[1, 5, 17, 25, 85, 167, 289, 425, 835, 1445, 2839, 4175, 4913, 7225, 14195, 24565, 48263, 70975, 122825, 241315, 820471, 1206575, 4102355, 20511775]

約数ペア:

[(1, 20511775), (5, 4102355), (17, 1206575), (25, 820471), (85, 241315), (167, 122825), (289, 70975), (425, 48263), (835, 24565), (1445, 14195), (2839, 7225), (4175, 4913)]