21959108

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{257}}^1\times {\mathrm{521}}^1$

素因数の和:823

約数の個数: 24

約数和(自身を含む): 39594744

約数和(自身を除く): 17635636

約数列:

[1, 2, 4, 41, 82, 164, 257, 514, 521, 1028, 1042, 2084, 10537, 21074, 21361, 42148, 42722, 85444, 133897, 267794, 535588, 5489777, 10979554, 21959108]

約数ペア:

[(1, 21959108), (2, 10979554), (4, 5489777), (41, 535588), (82, 267794), (164, 133897), (257, 85444), (514, 42722), (521, 42148), (1028, 21361), (1042, 21074), (2084, 10537)]