20565523881

素因数分解:

$3^2\times 7^2\times {\mathrm{137}}^1\times {\mathrm{340393}}^1$

素因数の和:340550

約数の個数: 36

約数和(自身を含む): 34808009652

約数和(自身を除く): 14242485771

約数列:

[1, 3, 7, 9, 21, 49, 63, 137, 147, 411, 441, 959, 1233, 2877, 6713, 8631, 20139, 60417, 340393, 1021179, 2382751, 3063537, 7148253, 16679257, 21444759, 46633841, 50037771, 139901523, 150113313, 326436887, 419704569, 979310661, 2285058209, 2937931983, 6855174627, 20565523881]

約数ペア:

[(1, 20565523881), (3, 6855174627), (7, 2937931983), (9, 2285058209), (21, 979310661), (49, 419704569), (63, 326436887), (137, 150113313), (147, 139901523), (411, 50037771), (441, 46633841), (959, 21444759), (1233, 16679257), (2877, 7148253), (6713, 3063537), (8631, 2382751), (20139, 1021179), (60417, 340393)]