21216976

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{120551}}^1$

素因数の和:120570

約数の個数: 20

約数和(自身を含む): 44845344

約数和(自身を除く): 23628368

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 120551, 241102, 482204, 964408, 1326061, 1928816, 2652122, 5304244, 10608488, 21216976]

約数ペア:

[(1, 21216976), (2, 10608488), (4, 5304244), (8, 2652122), (11, 1928816), (16, 1326061), (22, 964408), (44, 482204), (88, 241102), (176, 120551)]