18897999

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:415

約数の個数: 24

約数和(自身を含む): 27232128

約数和(自身を除く): 8334129

約数列:

[1, 3, 17, 51, 71, 213, 289, 307, 867, 921, 1207, 3621, 5219, 15657, 20519, 21797, 61557, 65391, 88723, 266169, 370549, 1111647, 6299333, 18897999]

約数ペア:

[(1, 18897999), (3, 6299333), (17, 1111647), (51, 370549), (71, 266169), (213, 88723), (289, 65391), (307, 61557), (867, 21797), (921, 20519), (1207, 15657), (3621, 5219)]