21490691

素因数分解:

${\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{1009}}^1$

素因数の和:1106

約数の個数: 12

約数和(自身を含む): 23088600

約数和(自身を除く): 1597909

約数列:

[1, 19, 59, 361, 1009, 1121, 19171, 21299, 59531, 364249, 1131089, 21490691]

約数ペア:

[(1, 21490691), (19, 1131089), (59, 364249), (361, 59531), (1009, 21299), (1121, 19171)]