20471841

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4729}}^1$

素因数の和:4785

約数の個数: 24

約数和(自身を含む): 32712680

約数和(自身を除く): 12240839

約数列:

[1, 3, 9, 13, 37, 39, 111, 117, 333, 481, 1443, 4329, 4729, 14187, 42561, 61477, 174973, 184431, 524919, 553293, 1574757, 2274649, 6823947, 20471841]

約数ペア:

[(1, 20471841), (3, 6823947), (9, 2274649), (13, 1574757), (37, 553293), (39, 524919), (111, 184431), (117, 174973), (333, 61477), (481, 42561), (1443, 14187), (4329, 4729)]