21331460

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{15919}}^1$

素因数の和:15995

約数の個数: 24

約数和(自身を含む): 45467520

約数和(自身を除く): 24136060

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 15919, 31838, 63676, 79595, 159190, 318380, 1066573, 2133146, 4266292, 5332865, 10665730, 21331460]

約数ペア:

[(1, 21331460), (2, 10665730), (4, 5332865), (5, 4266292), (10, 2133146), (20, 1066573), (67, 318380), (134, 159190), (268, 79595), (335, 63676), (670, 31838), (1340, 15919)]