20121573

素因数分解:

$3^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 29021440

約数和(自身を除く): 8899867

約数列:

[1, 3, 23, 31, 69, 93, 409, 529, 713, 1227, 1587, 2139, 9407, 12679, 16399, 28221, 38037, 49197, 216361, 291617, 649083, 874851, 6707191, 20121573]

約数ペア:

[(1, 20121573), (3, 6707191), (23, 874851), (31, 649083), (69, 291617), (93, 216361), (409, 49197), (529, 38037), (713, 28221), (1227, 16399), (1587, 12679), (2139, 9407)]