21940591

素因数分解:

${\mathrm{17}}^2\times {\mathrm{31}}^2\times {\mathrm{79}}^1$

素因数の和:175

約数の個数: 18

約数和(自身を含む): 24388080

約数和(自身を除く): 2447489

約数列:

[1, 17, 31, 79, 289, 527, 961, 1343, 2449, 8959, 16337, 22831, 41633, 75919, 277729, 707761, 1290623, 21940591]

約数ペア:

[(1, 21940591), (17, 1290623), (31, 707761), (79, 277729), (289, 75919), (527, 41633), (961, 22831), (1343, 16337), (2449, 8959)]