21041111

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{3919}}^1$

素因数の和:3998

約数の個数: 16

約数和(自身を含む): 26342400

約数和(自身を除く): 5301289

約数列:

[1, 7, 13, 59, 91, 413, 767, 3919, 5369, 27433, 50947, 231221, 356629, 1618547, 3005873, 21041111]

約数ペア:

[(1, 21041111), (7, 3005873), (13, 1618547), (59, 356629), (91, 231221), (413, 50947), (767, 27433), (3919, 5369)]