18902725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{563}}^1$

素因数の和:669

約数の個数: 24

約数和(自身を含む): 25176960

約数和(自身を除く): 6274235

約数列:

[1, 5, 17, 25, 79, 85, 395, 425, 563, 1343, 1975, 2815, 6715, 9571, 14075, 33575, 44477, 47855, 222385, 239275, 756109, 1111925, 3780545, 18902725]

約数ペア:

[(1, 18902725), (5, 3780545), (17, 1111925), (25, 756109), (79, 239275), (85, 222385), (395, 47855), (425, 44477), (563, 33575), (1343, 14075), (1975, 9571), (2815, 6715)]