20689263

素因数分解:

$3^5\times 7^1\times {\mathrm{12163}}^1$

素因数の和:12185

約数の個数: 24

約数和(自身を含む): 35421568

約数和(自身を除く): 14732305

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12163, 36489, 85141, 109467, 255423, 328401, 766269, 985203, 2298807, 2955609, 6896421, 20689263]

約数ペア:

[(1, 20689263), (3, 6896421), (7, 2955609), (9, 2298807), (21, 985203), (27, 766269), (63, 328401), (81, 255423), (189, 109467), (243, 85141), (567, 36489), (1701, 12163)]