8550220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 20704320

約数和(自身を除く): 12154100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 389, 628, 778, 785, 1099, 1556, 1570, 1945, 2198, 2723, 3140, 3890, 4396, 5446, 5495, 7780, 10892, 10990, 13615, 21980, 27230, 54460, 61073, 122146, 244292, 305365, 427511, 610730, 855022, 1221460, 1710044, 2137555, 4275110, 8550220]

約数ペア:

[(1, 8550220), (2, 4275110), (4, 2137555), (5, 1710044), (7, 1221460), (10, 855022), (14, 610730), (20, 427511), (28, 305365), (35, 244292), (70, 122146), (140, 61073), (157, 54460), (314, 27230), (389, 21980), (628, 13615), (778, 10990), (785, 10892), (1099, 7780), (1556, 5495), (1570, 5446), (1945, 4396), (2198, 3890), (2723, 3140)]