21320464

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{121139}}^1$

素因数の和:121158

約数の個数: 20

約数和(自身を含む): 45064080

約数和(自身を除く): 23743616

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 121139, 242278, 484556, 969112, 1332529, 1938224, 2665058, 5330116, 10660232, 21320464]

約数ペア:

[(1, 21320464), (2, 10660232), (4, 5330116), (8, 2665058), (11, 1938224), (16, 1332529), (22, 969112), (44, 484556), (88, 242278), (176, 121139)]