20496385

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{421}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 30627072

約数和(自身を除く): 10130687

約数列:

[1, 5, 7, 13, 35, 65, 91, 107, 421, 455, 535, 749, 1391, 2105, 2947, 3745, 5473, 6955, 9737, 14735, 27365, 38311, 45047, 48685, 191555, 225235, 315329, 585611, 1576645, 2928055, 4099277, 20496385]

約数ペア:

[(1, 20496385), (5, 4099277), (7, 2928055), (13, 1576645), (35, 585611), (65, 315329), (91, 225235), (107, 191555), (421, 48685), (455, 45047), (535, 38311), (749, 27365), (1391, 14735), (2105, 9737), (2947, 6955), (3745, 5473)]