21453761

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{1069}}^1$

素因数の和:1184

約数の個数: 16

約数和(自身を含む): 25474560

約数和(自身を除く): 4020799

約数列:

[1, 7, 47, 61, 329, 427, 1069, 2867, 7483, 20069, 50243, 65209, 351701, 456463, 3064823, 21453761]

約数ペア:

[(1, 21453761), (7, 3064823), (47, 456463), (61, 351701), (329, 65209), (427, 50243), (1069, 20069), (2867, 7483)]