21756688

素因数分解:

$2^4\times {\mathrm{277}}^1\times {\mathrm{4909}}^1$

素因数の和:5194

約数の個数: 20

約数和(自身を含む): 42314380

約数和(自身を除く): 20557692

約数列:

[1, 2, 4, 8, 16, 277, 554, 1108, 2216, 4432, 4909, 9818, 19636, 39272, 78544, 1359793, 2719586, 5439172, 10878344, 21756688]

約数ペア:

[(1, 21756688), (2, 10878344), (4, 5439172), (8, 2719586), (16, 1359793), (277, 78544), (554, 39272), (1108, 19636), (2216, 9818), (4432, 4909)]