397788391

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{991}}^1$

素因数の和:1423

約数の個数: 32

約数和(自身を含む): 535965696

約数和(自身を除く): 138177305

約数列:

[1, 7, 11, 13, 77, 91, 143, 401, 991, 1001, 2807, 4411, 5213, 6937, 10901, 12883, 30877, 36491, 57343, 76307, 90181, 141713, 397391, 401401, 991991, 2781737, 4371301, 5166083, 30599107, 36162581, 56826913, 397788391]

約数ペア:

[(1, 397788391), (7, 56826913), (11, 36162581), (13, 30599107), (77, 5166083), (91, 4371301), (143, 2781737), (401, 991991), (991, 401401), (1001, 397391), (2807, 141713), (4411, 90181), (5213, 76307), (6937, 57343), (10901, 36491), (12883, 30877)]