13821425

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{1913}}^1$

素因数の和:1957

約数の個数: 18

約数和(自身を含む): 18215538

約数和(自身を除く): 4394113

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 1913, 7225, 9565, 32521, 47825, 162605, 552857, 813025, 2764285, 13821425]

約数ペア:

[(1, 13821425), (5, 2764285), (17, 813025), (25, 552857), (85, 162605), (289, 47825), (425, 32521), (1445, 9565), (1913, 7225)]