21519799

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{677}}^1$

素因数の和:942

約数の個数: 16

約数和(自身を含む): 26035200

約数和(自身を除く): 4515401

約数列:

[1, 7, 19, 133, 239, 677, 1673, 4541, 4739, 12863, 31787, 90041, 161803, 1132621, 3074257, 21519799]

約数ペア:

[(1, 21519799), (7, 3074257), (19, 1132621), (133, 161803), (239, 90041), (677, 31787), (1673, 12863), (4541, 4739)]