21921963

素因数分解:

$3^1\times 7^2\times {\mathrm{197}}^1\times {\mathrm{757}}^1$

素因数の和:971

約数の個数: 24

約数和(自身を含む): 34219152

約数和(自身を除く): 12297189

約数列:

[1, 3, 7, 21, 49, 147, 197, 591, 757, 1379, 2271, 4137, 5299, 9653, 15897, 28959, 37093, 111279, 149129, 447387, 1043903, 3131709, 7307321, 21921963]

約数ペア:

[(1, 21921963), (3, 7307321), (7, 3131709), (21, 1043903), (49, 447387), (147, 149129), (197, 111279), (591, 37093), (757, 28959), (1379, 15897), (2271, 9653), (4137, 5299)]