64505920

素因数分解:

$2^6\times 5^1\times {\mathrm{201581}}^1$

素因数の和:201598

約数の個数: 28

約数和(自身を含む): 153605484

約数和(自身を除く): 89099564

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 201581, 403162, 806324, 1007905, 1612648, 2015810, 3225296, 4031620, 6450592, 8063240, 12901184, 16126480, 32252960, 64505920]

約数ペア:

[(1, 64505920), (2, 32252960), (4, 16126480), (5, 12901184), (8, 8063240), (10, 6450592), (16, 4031620), (20, 3225296), (32, 2015810), (40, 1612648), (64, 1007905), (80, 806324), (160, 403162), (320, 201581)]