21765279

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{907}}^1$

素因数の和:1350

約数の個数: 16

約数和(自身を含む): 30654080

約数和(自身を除く): 8888801

約数列:

[1, 3, 19, 57, 421, 907, 1263, 2721, 7999, 17233, 23997, 51699, 381847, 1145541, 7255093, 21765279]

約数ペア:

[(1, 21765279), (3, 7255093), (19, 1145541), (57, 381847), (421, 51699), (907, 23997), (1263, 17233), (2721, 7999)]