21528496

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{122321}}^1$

素因数の和:122340

約数の個数: 20

約数和(自身を含む): 45503784

約数和(自身を除く): 23975288

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 122321, 244642, 489284, 978568, 1345531, 1957136, 2691062, 5382124, 10764248, 21528496]

約数ペア:

[(1, 21528496), (2, 10764248), (4, 5382124), (8, 2691062), (11, 1957136), (16, 1345531), (22, 978568), (44, 489284), (88, 244642), (176, 122321)]