20886520

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5867}}^1$

素因数の和:5967

約数の個数: 32

約数和(自身を含む): 47530800

約数和(自身を除く): 26644280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5867, 11734, 23468, 29335, 46936, 58670, 117340, 234680, 522163, 1044326, 2088652, 2610815, 4177304, 5221630, 10443260, 20886520]

約数ペア:

[(1, 20886520), (2, 10443260), (4, 5221630), (5, 4177304), (8, 2610815), (10, 2088652), (20, 1044326), (40, 522163), (89, 234680), (178, 117340), (356, 58670), (445, 46936), (712, 29335), (890, 23468), (1780, 11734), (3560, 5867)]