18222725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{809}}^1$

素因数の和:889

約数の個数: 24

約数和(自身を含む): 24406920

約数和(自身を除く): 6184195

約数列:

[1, 5, 17, 25, 53, 85, 265, 425, 809, 901, 1325, 4045, 4505, 13753, 20225, 22525, 42877, 68765, 214385, 343825, 728909, 1071925, 3644545, 18222725]

約数ペア:

[(1, 18222725), (5, 3644545), (17, 1071925), (25, 728909), (53, 343825), (85, 214385), (265, 68765), (425, 42877), (809, 22525), (901, 20225), (1325, 13753), (4045, 4505)]