256422460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1831589}}^1$

素因数の和:1831605

約数の個数: 24

約数和(自身を含む): 615414240

約数和(自身を除く): 358991780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1831589, 3663178, 7326356, 9157945, 12821123, 18315890, 25642246, 36631780, 51284492, 64105615, 128211230, 256422460]

約数ペア:

[(1, 256422460), (2, 128211230), (4, 64105615), (5, 51284492), (7, 36631780), (10, 25642246), (14, 18315890), (20, 12821123), (28, 9157945), (35, 7326356), (70, 3663178), (140, 1831589)]