21184261

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{2657}}^1$

素因数の和:2748

約数の個数: 16

約数和(自身を含む): 26027136

約数和(自身を除く): 4842875

約数列:

[1, 7, 17, 67, 119, 469, 1139, 2657, 7973, 18599, 45169, 178019, 316183, 1246133, 3026323, 21184261]

約数ペア:

[(1, 21184261), (7, 3026323), (17, 1246133), (67, 316183), (119, 178019), (469, 45169), (1139, 18599), (2657, 7973)]