20678545

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{3631}}^1$

素因数の和:3720

約数の個数: 16

約数和(自身を含む): 26673408

約数和(自身を除く): 5994863

約数列:

[1, 5, 17, 67, 85, 335, 1139, 3631, 5695, 18155, 61727, 243277, 308635, 1216385, 4135709, 20678545]

約数ペア:

[(1, 20678545), (5, 4135709), (17, 1216385), (67, 308635), (85, 243277), (335, 61727), (1139, 18155), (3631, 5695)]