129190225

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{17881}}^1$

素因数の和:17925

約数の個数: 18

約数和(自身を含む): 170182994

約数和(自身を除く): 40992769

約数列:

[1, 5, 17, 25, 85, 289, 425, 1445, 7225, 17881, 89405, 303977, 447025, 1519885, 5167609, 7599425, 25838045, 129190225]

約数ペア:

[(1, 129190225), (5, 25838045), (17, 7599425), (25, 5167609), (85, 1519885), (289, 447025), (425, 303977), (1445, 89405), (7225, 17881)]