21740579

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{5273}}^1$

素因数の和:5330

約数の個数: 16

約数和(自身を含む): 27002880

約数和(自身を除く): 5262301

約数列:

[1, 7, 19, 31, 133, 217, 589, 4123, 5273, 36911, 100187, 163463, 701309, 1144241, 3105797, 21740579]

約数ペア:

[(1, 21740579), (7, 3105797), (19, 1144241), (31, 701309), (133, 163463), (217, 100187), (589, 36911), (4123, 5273)]