21068929

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{1009}}^1$

素因数の和:1192

約数の個数: 16

約数和(自身を含む): 25532800

約数和(自身を除く): 4463871

約数列:

[1, 7, 19, 133, 157, 1009, 1099, 2983, 7063, 19171, 20881, 134197, 158413, 1108891, 3009847, 21068929]

約数ペア:

[(1, 21068929), (7, 3009847), (19, 1108891), (133, 158413), (157, 134197), (1009, 20881), (1099, 19171), (2983, 7063)]