20129031

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4001}}^1$

素因数の和:4063

約数の個数: 24

約数和(自身を含む): 32048016

約数和(自身を除く): 11918985

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 559, 1677, 4001, 5031, 12003, 36009, 52013, 156039, 172043, 468117, 516129, 1548387, 2236559, 6709677, 20129031]

約数ペア:

[(1, 20129031), (3, 6709677), (9, 2236559), (13, 1548387), (39, 516129), (43, 468117), (117, 172043), (129, 156039), (387, 52013), (559, 36009), (1677, 12003), (4001, 5031)]