21760221

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{60953}}^1$

素因数の和:60980

約数の個数: 16

約数和(自身を含む): 35109504

約数和(自身を除く): 13349283

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 60953, 182859, 426671, 1036201, 1280013, 3108603, 7253407, 21760221]

約数ペア:

[(1, 21760221), (3, 7253407), (7, 3108603), (17, 1280013), (21, 1036201), (51, 426671), (119, 182859), (357, 60953)]