128027225

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{659}}^1$

素因数の和:1097

約数の個数: 24

約数和(自身を含む): 167772000

約数和(自身を除く): 39744775

約数列:

[1, 5, 19, 25, 95, 409, 475, 659, 2045, 3295, 7771, 10225, 12521, 16475, 38855, 62605, 194275, 269531, 313025, 1347655, 5121089, 6738275, 25605445, 128027225]

約数ペア:

[(1, 128027225), (5, 25605445), (19, 6738275), (25, 5121089), (95, 1347655), (409, 313025), (475, 269531), (659, 194275), (2045, 62605), (3295, 38855), (7771, 16475), (10225, 12521)]