20717781

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{443}}^1$

素因数の和:601

約数の個数: 32

約数和(自身を含む): 33758208

約数和(自身を除く): 13040427

約数列:

[1, 3, 7, 17, 21, 51, 119, 131, 357, 393, 443, 917, 1329, 2227, 2751, 3101, 6681, 7531, 9303, 15589, 22593, 46767, 52717, 58033, 158151, 174099, 406231, 986561, 1218693, 2959683, 6905927, 20717781]

約数ペア:

[(1, 20717781), (3, 6905927), (7, 2959683), (17, 1218693), (21, 986561), (51, 406231), (119, 174099), (131, 158151), (357, 58033), (393, 52717), (443, 46767), (917, 22593), (1329, 15589), (2227, 9303), (2751, 7531), (3101, 6681)]