207956021

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{4751}}^1$

素因数の和:4821

約数の個数: 24

約数和(自身を含む): 264363264

約数和(自身を除く): 56407243

約数列:

[1, 7, 13, 37, 91, 169, 259, 481, 1183, 3367, 4751, 6253, 33257, 43771, 61763, 175787, 432341, 802919, 1230509, 2285231, 5620433, 15996617, 29708003, 207956021]

約数ペア:

[(1, 207956021), (7, 29708003), (13, 15996617), (37, 5620433), (91, 2285231), (169, 1230509), (259, 802919), (481, 432341), (1183, 175787), (3367, 61763), (4751, 43771), (6253, 33257)]