21955664

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{33469}}^1$

素因数の和:33518

約数の個数: 20

約数和(自身を含む): 43577940

約数和(自身を除く): 21622276

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 33469, 66938, 133876, 267752, 535504, 1372229, 2744458, 5488916, 10977832, 21955664]

約数ペア:

[(1, 21955664), (2, 10977832), (4, 5488916), (8, 2744458), (16, 1372229), (41, 535504), (82, 267752), (164, 133876), (328, 66938), (656, 33469)]