256389080

素因数分解:

$2^3\times 5^1\times {\mathrm{1031}}^1\times {\mathrm{6217}}^1$

素因数の和:7259

約数の個数: 32

約数和(自身を含む): 577527840

約数和(自身を除く): 321138760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1031, 2062, 4124, 5155, 6217, 8248, 10310, 12434, 20620, 24868, 31085, 41240, 49736, 62170, 124340, 248680, 6409727, 12819454, 25638908, 32048635, 51277816, 64097270, 128194540, 256389080]

約数ペア:

[(1, 256389080), (2, 128194540), (4, 64097270), (5, 51277816), (8, 32048635), (10, 25638908), (20, 12819454), (40, 6409727), (1031, 248680), (2062, 124340), (4124, 62170), (5155, 49736), (6217, 41240), (8248, 31085), (10310, 24868), (12434, 20620)]