2108999905

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{37691}}^1$

素因数の和:37765

約数の個数: 24

約数和(自身を含む): 2757245184

約数和(自身を除く): 648245279

約数列:

[1, 5, 19, 31, 95, 155, 361, 589, 1805, 2945, 11191, 37691, 55955, 188455, 716129, 1168421, 3580645, 5842105, 13606451, 22199999, 68032255, 110999995, 421799981, 2108999905]

約数ペア:

[(1, 2108999905), (5, 421799981), (19, 110999995), (31, 68032255), (95, 22199999), (155, 13606451), (361, 5842105), (589, 3580645), (1805, 1168421), (2945, 716129), (11191, 188455), (37691, 55955)]