20790161

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:333

約数の個数: 24

約数和(自身を含む): 25800480

約数和(自身を除く): 5010319

約数列:

[1, 7, 19, 49, 133, 137, 163, 931, 959, 1141, 2603, 3097, 6713, 7987, 18221, 21679, 22331, 127547, 151753, 156317, 424289, 1094219, 2970023, 20790161]

約数ペア:

[(1, 20790161), (7, 2970023), (19, 1094219), (49, 424289), (133, 156317), (137, 151753), (163, 127547), (931, 22331), (959, 21679), (1141, 18221), (2603, 7987), (3097, 6713)]