25821971

素因数分解:

$7^2\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:291

約数の個数: 24

約数和(自身を含む): 31297104

約数和(自身を除く): 5475133

約数列:

[1, 7, 49, 53, 61, 163, 371, 427, 1141, 2597, 2989, 3233, 7987, 8639, 9943, 22631, 60473, 69601, 158417, 423311, 487207, 526979, 3688853, 25821971]

約数ペア:

[(1, 25821971), (7, 3688853), (49, 526979), (53, 487207), (61, 423311), (163, 158417), (371, 69601), (427, 60473), (1141, 22631), (2597, 9943), (2989, 8639), (3233, 7987)]