18981979

素因数分解:

${\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{277}}^1$

素因数の和:462

約数の個数: 16

約数和(自身を含む): 21016800

約数和(自身を除く): 2034821

約数列:

[1, 17, 29, 139, 277, 493, 2363, 4031, 4709, 8033, 38503, 68527, 136561, 654551, 1116587, 18981979]

約数ペア:

[(1, 18981979), (17, 1116587), (29, 654551), (139, 136561), (277, 68527), (493, 38503), (2363, 8033), (4031, 4709)]