128361025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{487}}^1\times {\mathrm{811}}^1$

素因数の和:1321

約数の個数: 24

約数和(自身を含む): 171975104

約数和(自身を除く): 43614079

約数列:

[1, 5, 13, 25, 65, 325, 487, 811, 2435, 4055, 6331, 10543, 12175, 20275, 31655, 52715, 158275, 263575, 394957, 1974785, 5134441, 9873925, 25672205, 128361025]

約数ペア:

[(1, 128361025), (5, 25672205), (13, 9873925), (25, 5134441), (65, 1974785), (325, 394957), (487, 263575), (811, 158275), (2435, 52715), (4055, 31655), (6331, 20275), (10543, 12175)]