18216945

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23813}}^1$

素因数の和:23841

約数の個数: 24

約数和(自身を含む): 33434856

約数和(自身を除く): 15217911

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 23813, 71439, 119065, 214317, 357195, 404821, 1071585, 1214463, 2024105, 3643389, 6072315, 18216945]

約数ペア:

[(1, 18216945), (3, 6072315), (5, 3643389), (9, 2024105), (15, 1214463), (17, 1071585), (45, 404821), (51, 357195), (85, 214317), (153, 119065), (255, 71439), (765, 23813)]