20457855

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1117}}^1$

素因数の和:1176

約数の個数: 48

約数和(自身を含む): 39765024

約数和(自身を除く): 19307169

約数列:

[1, 3, 5, 9, 11, 15, 33, 37, 45, 55, 99, 111, 165, 185, 333, 407, 495, 555, 1117, 1221, 1665, 2035, 3351, 3663, 5585, 6105, 10053, 12287, 16755, 18315, 36861, 41329, 50265, 61435, 110583, 123987, 184305, 206645, 371961, 454619, 552915, 619935, 1363857, 1859805, 2273095, 4091571, 6819285, 20457855]

約数ペア:

[(1, 20457855), (3, 6819285), (5, 4091571), (9, 2273095), (11, 1859805), (15, 1363857), (33, 619935), (37, 552915), (45, 454619), (55, 371961), (99, 206645), (111, 184305), (165, 123987), (185, 110583), (333, 61435), (407, 50265), (495, 41329), (555, 36861), (1117, 18315), (1221, 16755), (1665, 12287), (2035, 10053), (3351, 6105), (3663, 5585)]