20666080

素因数分解:

$2^5\times 5^1\times {\mathrm{227}}^1\times {\mathrm{569}}^1$

素因数の和:811

約数の個数: 48

約数和(自身を含む): 49124880

約数和(自身を除く): 28458800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 227, 454, 569, 908, 1135, 1138, 1816, 2270, 2276, 2845, 3632, 4540, 4552, 5690, 7264, 9080, 9104, 11380, 18160, 18208, 22760, 36320, 45520, 91040, 129163, 258326, 516652, 645815, 1033304, 1291630, 2066608, 2583260, 4133216, 5166520, 10333040, 20666080]

約数ペア:

[(1, 20666080), (2, 10333040), (4, 5166520), (5, 4133216), (8, 2583260), (10, 2066608), (16, 1291630), (20, 1033304), (32, 645815), (40, 516652), (80, 258326), (160, 129163), (227, 91040), (454, 45520), (569, 36320), (908, 22760), (1135, 18208), (1138, 18160), (1816, 11380), (2270, 9104), (2276, 9080), (2845, 7264), (3632, 5690), (4540, 4552)]