388640266

素因数分解:

$2^1\times 7^4\times {\mathrm{80933}}^1$

素因数の和:80963

約数の個数: 20

約数和(自身を含む): 680088402

約数和(自身を除く): 291448136

約数列:

[1, 2, 7, 14, 49, 98, 343, 686, 2401, 4802, 80933, 161866, 566531, 1133062, 3965717, 7931434, 27760019, 55520038, 194320133, 388640266]

約数ペア:

[(1, 388640266), (2, 194320133), (7, 55520038), (14, 27760019), (49, 7931434), (98, 3965717), (343, 1133062), (686, 566531), (2401, 161866), (4802, 80933)]