21800863

素因数分解:

$7^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:486

約数の個数: 16

約数和(自身を含む): 25482240

約数和(自身を除く): 3681377

約数列:

[1, 7, 83, 157, 239, 581, 1099, 1673, 13031, 19837, 37523, 91217, 138859, 262661, 3114409, 21800863]

約数ペア:

[(1, 21800863), (7, 3114409), (83, 262661), (157, 138859), (239, 91217), (581, 37523), (1099, 19837), (1673, 13031)]