209287967

素因数分解:

$7^4\times {\mathrm{67}}^1\times {\mathrm{1301}}^1$

素因数の和:1396

約数の個数: 20

約数和(自身を含む): 247989336

約数和(自身を除く): 38701369

約数列:

[1, 7, 49, 67, 343, 469, 1301, 2401, 3283, 9107, 22981, 63749, 87167, 160867, 446243, 610169, 3123701, 4271183, 29898281, 209287967]

約数ペア:

[(1, 209287967), (7, 29898281), (49, 4271183), (67, 3123701), (343, 610169), (469, 446243), (1301, 160867), (2401, 87167), (3283, 63749), (9107, 22981)]