813653281

素因数分解:

$7^4\times {\mathrm{109}}^1\times {\mathrm{3109}}^1$

素因数の和:3246

約数の個数: 20

約数和(自身を含む): 958222100

約数和(自身を除く): 144568819

約数列:

[1, 7, 49, 109, 343, 763, 2401, 3109, 5341, 21763, 37387, 152341, 261709, 338881, 1066387, 2372167, 7464709, 16605169, 116236183, 813653281]

約数ペア:

[(1, 813653281), (7, 116236183), (49, 16605169), (109, 7464709), (343, 2372167), (763, 1066387), (2401, 338881), (3109, 261709), (5341, 152341), (21763, 37387)]