21941288

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{161333}}^1$

素因数の和:161356

約数の個数: 16

約数和(自身を含む): 43560180

約数和(自身を除く): 21618892

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 161333, 322666, 645332, 1290664, 2742661, 5485322, 10970644, 21941288]

約数ペア:

[(1, 21941288), (2, 10970644), (4, 5485322), (8, 2742661), (17, 1290664), (34, 645332), (68, 322666), (136, 161333)]