20684620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{563}}^1$

素因数の和:750

約数の個数: 48

約数和(自身を含む): 47755008

約数和(自身を除く): 27070388

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 167, 220, 334, 563, 668, 835, 1126, 1670, 1837, 2252, 2815, 3340, 3674, 5630, 6193, 7348, 9185, 11260, 12386, 18370, 24772, 30965, 36740, 61930, 94021, 123860, 188042, 376084, 470105, 940210, 1034231, 1880420, 2068462, 4136924, 5171155, 10342310, 20684620]

約数ペア:

[(1, 20684620), (2, 10342310), (4, 5171155), (5, 4136924), (10, 2068462), (11, 1880420), (20, 1034231), (22, 940210), (44, 470105), (55, 376084), (110, 188042), (167, 123860), (220, 94021), (334, 61930), (563, 36740), (668, 30965), (835, 24772), (1126, 18370), (1670, 12386), (1837, 11260), (2252, 9185), (2815, 7348), (3340, 6193), (3674, 5630)]