81717795

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{20873}}^1$

素因数の和:20916

約数の個数: 32

約数和(自身を含む): 150292800

約数和(自身を除く): 68575005

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915, 20873, 62619, 104365, 187857, 313095, 563571, 605317, 939285, 1815951, 2817855, 3026585, 5447853, 9079755, 16343559, 27239265, 81717795]

約数ペア:

[(1, 81717795), (3, 27239265), (5, 16343559), (9, 9079755), (15, 5447853), (27, 3026585), (29, 2817855), (45, 1815951), (87, 939285), (135, 605317), (145, 563571), (261, 313095), (435, 187857), (783, 104365), (1305, 62619), (3915, 20873)]