21158459

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{1163}}^1$

素因数の和:1306

約数の個数: 16

約数和(自身を含む): 25477632

約数和(自身を除く): 4319173

約数列:

[1, 7, 23, 113, 161, 791, 1163, 2599, 8141, 18193, 26749, 131419, 187243, 919933, 3022637, 21158459]

約数ペア:

[(1, 21158459), (7, 3022637), (23, 919933), (113, 187243), (161, 131419), (791, 26749), (1163, 18193), (2599, 8141)]