18069725

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:146

約数の個数: 36

約数和(自身を含む): 24782268

約数和(自身を除く): 6712543

約数列:

[1, 5, 17, 25, 41, 61, 85, 205, 289, 305, 425, 697, 1025, 1037, 1445, 1525, 2501, 3485, 5185, 7225, 11849, 12505, 17425, 17629, 25925, 42517, 59245, 62525, 88145, 212585, 296225, 440725, 722789, 1062925, 3613945, 18069725]

約数ペア:

[(1, 18069725), (5, 3613945), (17, 1062925), (25, 722789), (41, 440725), (61, 296225), (85, 212585), (205, 88145), (289, 62525), (305, 59245), (425, 42517), (697, 25925), (1025, 17629), (1037, 17425), (1445, 12505), (1525, 11849), (2501, 7225), (3485, 5185)]