81837915

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{487}}^1\times {\mathrm{659}}^1$

素因数の和:1171

約数の個数: 32

約数和(自身を含む): 139138560

約数和(自身を除く): 57300645

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 487, 659, 1461, 1977, 2435, 3295, 7305, 8279, 9885, 11203, 24837, 33609, 41395, 56015, 124185, 168045, 320933, 962799, 1604665, 4813995, 5455861, 16367583, 27279305, 81837915]

約数ペア:

[(1, 81837915), (3, 27279305), (5, 16367583), (15, 5455861), (17, 4813995), (51, 1604665), (85, 962799), (255, 320933), (487, 168045), (659, 124185), (1461, 56015), (1977, 41395), (2435, 33609), (3295, 24837), (7305, 11203), (8279, 9885)]