399192661

素因数分解:

$7^4\times {\mathrm{53}}^1\times {\mathrm{3137}}^1$

素因数の和:3218

約数の個数: 20

約数和(自身を含む): 474635052

約数和(自身を除く): 75442391

約数列:

[1, 7, 49, 53, 343, 371, 2401, 2597, 3137, 18179, 21959, 127253, 153713, 166261, 1075991, 1163827, 7531937, 8146789, 57027523, 399192661]

約数ペア:

[(1, 399192661), (7, 57027523), (49, 8146789), (53, 7531937), (343, 1163827), (371, 1075991), (2401, 166261), (2597, 153713), (3137, 127253), (18179, 21959)]