21108285

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42643}}^1$

素因数の和:42665

約数の個数: 24

約数和(自身を含む): 39914784

約数和(自身を除く): 18806499

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42643, 127929, 213215, 383787, 469073, 639645, 1407219, 1918935, 2345365, 4221657, 7036095, 21108285]

約数ペア:

[(1, 21108285), (3, 7036095), (5, 4221657), (9, 2345365), (11, 1918935), (15, 1407219), (33, 639645), (45, 469073), (55, 383787), (99, 213215), (165, 127929), (495, 42643)]