20354551

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:263

約数の個数: 24

約数和(自身を含む): 24779040

約数和(自身を除く): 4424489

約数列:

[1, 7, 37, 49, 103, 109, 259, 721, 763, 1813, 3811, 4033, 5047, 5341, 11227, 26677, 28231, 78589, 186739, 197617, 415399, 550123, 2907793, 20354551]

約数ペア:

[(1, 20354551), (7, 2907793), (37, 550123), (49, 415399), (103, 197617), (109, 186739), (259, 78589), (721, 28231), (763, 26677), (1813, 11227), (3811, 5341), (4033, 5047)]