21393939

素因数分解:

$3^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{1223}}^1$

素因数の和:1264

約数の個数: 32

約数和(自身を含む): 35251200

約数和(自身を除く): 13857261

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 343, 357, 833, 1029, 1223, 2499, 3669, 5831, 8561, 17493, 20791, 25683, 59927, 62373, 145537, 179781, 419489, 436611, 1018759, 1258467, 3056277, 7131313, 21393939]

約数ペア:

[(1, 21393939), (3, 7131313), (7, 3056277), (17, 1258467), (21, 1018759), (49, 436611), (51, 419489), (119, 179781), (147, 145537), (343, 62373), (357, 59927), (833, 25683), (1029, 20791), (1223, 17493), (2499, 8561), (3669, 5831)]