21245730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64381}}^1$

素因数の和:64402

約数の個数: 32

約数和(自身を含む): 55626048

約数和(自身を除く): 34380318

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 330, 64381, 128762, 193143, 321905, 386286, 643810, 708191, 965715, 1416382, 1931430, 2124573, 3540955, 4249146, 7081910, 10622865, 21245730]

約数ペア:

[(1, 21245730), (2, 10622865), (3, 7081910), (5, 4249146), (6, 3540955), (10, 2124573), (11, 1931430), (15, 1416382), (22, 965715), (30, 708191), (33, 643810), (55, 386286), (66, 321905), (110, 193143), (165, 128762), (330, 64381)]