21333347

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{1063}}^1$

素因数の和:1178

約数の個数: 16

約数和(自身を含む): 25331712

約数和(自身を除く): 3998365

約数列:

[1, 7, 47, 61, 329, 427, 1063, 2867, 7441, 20069, 49961, 64843, 349727, 453901, 3047621, 21333347]

約数ペア:

[(1, 21333347), (7, 3047621), (47, 453901), (61, 349727), (329, 64843), (427, 49961), (1063, 20069), (2867, 7441)]