21281704

素因数分解:

$2^3\times {\mathrm{227}}^1\times {\mathrm{11719}}^1$

素因数の和:11952

約数の個数: 16

約数和(自身を含む): 40082400

約数和(自身を除く): 18800696

約数列:

[1, 2, 4, 8, 227, 454, 908, 1816, 11719, 23438, 46876, 93752, 2660213, 5320426, 10640852, 21281704]

約数ペア:

[(1, 21281704), (2, 10640852), (4, 5320426), (8, 2660213), (227, 93752), (454, 46876), (908, 23438), (1816, 11719)]