138780397

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{433}}^1$

素因数の和:689

約数の個数: 24

約数和(自身を含む): 167822592

約数和(自身を除く): 29042195

約数列:

[1, 7, 31, 49, 211, 217, 433, 1477, 1519, 3031, 6541, 10339, 13423, 21217, 45787, 91363, 93961, 320509, 639541, 657727, 2832253, 4476787, 19825771, 138780397]

約数ペア:

[(1, 138780397), (7, 19825771), (31, 4476787), (49, 2832253), (211, 657727), (217, 639541), (433, 320509), (1477, 93961), (1519, 91363), (3031, 45787), (6541, 21217), (10339, 13423)]