21550985

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{3571}}^1$

素因数の和:3664

約数の個数: 16

約数和(自身を含む): 27775872

約数和(自身を除く): 6224887

約数列:

[1, 5, 17, 71, 85, 355, 1207, 3571, 6035, 17855, 60707, 253541, 303535, 1267705, 4310197, 21550985]

約数ペア:

[(1, 21550985), (5, 4310197), (17, 1267705), (71, 303535), (85, 253541), (355, 60707), (1207, 17855), (3571, 6035)]