19730455

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{643}}^1$

素因数の和:703

約数の個数: 24

約数和(自身を含む): 26499312

約数和(自身を除く): 6768857

約数列:

[1, 5, 17, 19, 85, 95, 323, 361, 643, 1615, 1805, 3215, 6137, 10931, 12217, 30685, 54655, 61085, 207689, 232123, 1038445, 1160615, 3946091, 19730455]

約数ペア:

[(1, 19730455), (5, 3946091), (17, 1160615), (19, 1038445), (85, 232123), (95, 207689), (323, 61085), (361, 54655), (643, 30685), (1615, 12217), (1805, 10931), (3215, 6137)]