20964937

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{661}}^1$

素因数の和:888

約数の個数: 16

約数和(自身を含む): 25166592

約数和(自身を除く): 4201655

約数列:

[1, 7, 23, 161, 197, 661, 1379, 4531, 4627, 15203, 31717, 106421, 130217, 911519, 2994991, 20964937]

約数ペア:

[(1, 20964937), (7, 2994991), (23, 911519), (161, 130217), (197, 106421), (661, 31717), (1379, 15203), (4531, 4627)]