64507940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{460771}}^1$

素因数の和:460787

約数の個数: 24

約数和(自身を含む): 154819392

約数和(自身を除く): 90311452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 460771, 921542, 1843084, 2303855, 3225397, 4607710, 6450794, 9215420, 12901588, 16126985, 32253970, 64507940]

約数ペア:

[(1, 64507940), (2, 32253970), (4, 16126985), (5, 12901588), (7, 9215420), (10, 6450794), (14, 4607710), (20, 3225397), (28, 2303855), (35, 1843084), (70, 921542), (140, 460771)]