20154745

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7211}}^1$

素因数の和:7272

約数の個数: 16

約数和(自身を含む): 26655552

約数和(自身を除く): 6500807

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 7211, 36055, 93743, 310073, 468715, 1550365, 4030949, 20154745]

約数ペア:

[(1, 20154745), (5, 4030949), (13, 1550365), (43, 468715), (65, 310073), (215, 93743), (559, 36055), (2795, 7211)]