20666395

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{1031}}^1$

素因数の和:1266

約数の個数: 16

約数和(自身を含む): 26254080

約数和(自身を除く): 5587685

約数列:

[1, 5, 19, 95, 211, 1031, 1055, 4009, 5155, 19589, 20045, 97945, 217541, 1087705, 4133279, 20666395]

約数ペア:

[(1, 20666395), (5, 4133279), (19, 1087705), (95, 217541), (211, 97945), (1031, 20045), (1055, 19589), (4009, 5155)]