21240496

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{10453}}^1$

素因数の和:10588

約数の個数: 20

約数和(自身を含む): 41481472

約数和(自身を除く): 20240976

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 10453, 20906, 41812, 83624, 167248, 1327531, 2655062, 5310124, 10620248, 21240496]

約数ペア:

[(1, 21240496), (2, 10620248), (4, 5310124), (8, 2655062), (16, 1327531), (127, 167248), (254, 83624), (508, 41812), (1016, 20906), (2032, 10453)]