64840480

素因数分解:

$2^5\times 5^1\times {\mathrm{405253}}^1$

素因数の和:405268

約数の個数: 24

約数和(自身を含む): 153186012

約数和(自身を除く): 88345532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 405253, 810506, 1621012, 2026265, 3242024, 4052530, 6484048, 8105060, 12968096, 16210120, 32420240, 64840480]

約数ペア:

[(1, 64840480), (2, 32420240), (4, 16210120), (5, 12968096), (8, 8105060), (10, 6484048), (16, 4052530), (20, 3242024), (32, 2026265), (40, 1621012), (80, 810506), (160, 405253)]