531661520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{511213}}^1$

素因数の和:511239

約数の個数: 40

約数和(自身を含む): 1331201256

約数和(自身を除く): 799539736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 511213, 1022426, 2044852, 2556065, 4089704, 5112130, 6645769, 8179408, 10224260, 13291538, 20448520, 26583076, 33228845, 40897040, 53166152, 66457690, 106332304, 132915380, 265830760, 531661520]

約数ペア:

[(1, 531661520), (2, 265830760), (4, 132915380), (5, 106332304), (8, 66457690), (10, 53166152), (13, 40897040), (16, 33228845), (20, 26583076), (26, 20448520), (40, 13291538), (52, 10224260), (65, 8179408), (80, 6645769), (104, 5112130), (130, 4089704), (208, 2556065), (260, 2044852), (520, 1022426), (1040, 511213)]