71621425

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{431}}^1$

素因数の和:498

約数の個数: 36

約数和(自身を含む): 98672256

約数和(自身を除く): 27050831

約数列:

[1, 5, 17, 23, 25, 85, 115, 289, 391, 425, 431, 575, 1445, 1955, 2155, 6647, 7225, 7327, 9775, 9913, 10775, 33235, 36635, 49565, 124559, 166175, 168521, 183175, 247825, 622795, 842605, 2864857, 3113975, 4213025, 14324285, 71621425]

約数ペア:

[(1, 71621425), (5, 14324285), (17, 4213025), (23, 3113975), (25, 2864857), (85, 842605), (115, 622795), (289, 247825), (391, 183175), (425, 168521), (431, 166175), (575, 124559), (1445, 49565), (1955, 36635), (2155, 33235), (6647, 10775), (7225, 9913), (7327, 9775)]