28117817

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1193}}^1$

素因数の和:1257

約数の個数: 24

約数和(自身を含む): 36206856

約数和(自身を除く): 8089039

約数列:

[1, 7, 13, 37, 49, 91, 259, 481, 637, 1193, 1813, 3367, 8351, 15509, 23569, 44141, 58457, 108563, 308987, 573833, 759941, 2162909, 4016831, 28117817]

約数ペア:

[(1, 28117817), (7, 4016831), (13, 2162909), (37, 759941), (49, 573833), (91, 308987), (259, 108563), (481, 58457), (637, 44141), (1193, 23569), (1813, 15509), (3367, 8351)]