256217020

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{71569}}^1$

素因数の和:71757

約数の個数: 24

約数和(自身を含む): 541069200

約数和(自身を除く): 284852180

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 71569, 143138, 286276, 357845, 715690, 1431380, 12810851, 25621702, 51243404, 64054255, 128108510, 256217020]

約数ペア:

[(1, 256217020), (2, 128108510), (4, 64054255), (5, 51243404), (10, 25621702), (20, 12810851), (179, 1431380), (358, 715690), (716, 357845), (895, 286276), (1790, 143138), (3580, 71569)]