21715940

素因数分解:

$2^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{3469}}^1$

素因数の和:3791

約数の個数: 24

約数和(自身を含む): 45762360

約数和(自身を除く): 24046420

約数列:

[1, 2, 4, 5, 10, 20, 313, 626, 1252, 1565, 3130, 3469, 6260, 6938, 13876, 17345, 34690, 69380, 1085797, 2171594, 4343188, 5428985, 10857970, 21715940]

約数ペア:

[(1, 21715940), (2, 10857970), (4, 5428985), (5, 4343188), (10, 2171594), (20, 1085797), (313, 69380), (626, 34690), (1252, 17345), (1565, 13876), (3130, 6938), (3469, 6260)]