8720740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{167}}^1\times {\mathrm{373}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 21111552

約数和(自身を除く): 12390812

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 167, 334, 373, 668, 746, 835, 1169, 1492, 1670, 1865, 2338, 2611, 3340, 3730, 4676, 5222, 5845, 7460, 10444, 11690, 13055, 23380, 26110, 52220, 62291, 124582, 249164, 311455, 436037, 622910, 872074, 1245820, 1744148, 2180185, 4360370, 8720740]

約数ペア:

[(1, 8720740), (2, 4360370), (4, 2180185), (5, 1744148), (7, 1245820), (10, 872074), (14, 622910), (20, 436037), (28, 311455), (35, 249164), (70, 124582), (140, 62291), (167, 52220), (334, 26110), (373, 23380), (668, 13055), (746, 11690), (835, 10444), (1169, 7460), (1492, 5845), (1670, 5222), (1865, 4676), (2338, 3730), (2611, 3340)]