21002638

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{439}}^1\times {\mathrm{1259}}^1$

素因数の和:1719

約数の個数: 16

約数和(自身を含む): 33264000

約数和(自身を除く): 12261362

約数列:

[1, 2, 19, 38, 439, 878, 1259, 2518, 8341, 16682, 23921, 47842, 552701, 1105402, 10501319, 21002638]

約数ペア:

[(1, 21002638), (2, 10501319), (19, 1105402), (38, 552701), (439, 47842), (878, 23921), (1259, 16682), (2518, 8341)]