21036440

素因数分解:

$2^3\times 5^1\times {\mathrm{367}}^1\times {\mathrm{1433}}^1$

素因数の和:1811

約数の個数: 32

約数和(自身を含む): 47494080

約数和(自身を除く): 26457640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 367, 734, 1433, 1468, 1835, 2866, 2936, 3670, 5732, 7165, 7340, 11464, 14330, 14680, 28660, 57320, 525911, 1051822, 2103644, 2629555, 4207288, 5259110, 10518220, 21036440]

約数ペア:

[(1, 21036440), (2, 10518220), (4, 5259110), (5, 4207288), (8, 2629555), (10, 2103644), (20, 1051822), (40, 525911), (367, 57320), (734, 28660), (1433, 14680), (1468, 14330), (1835, 11464), (2866, 7340), (2936, 7165), (3670, 5732)]