21505682

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{51449}}^1$

素因数の和:51481

約数の個数: 16

約数和(自身を含む): 37044000

約数和(自身を除く): 15538318

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 51449, 102898, 565939, 977531, 1131878, 1955062, 10752841, 21505682]

約数ペア:

[(1, 21505682), (2, 10752841), (11, 1955062), (19, 1131878), (22, 977531), (38, 565939), (209, 102898), (418, 51449)]