20511777

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{349}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 32457600

約数和(自身を除く): 11945823

約数列:

[1, 3, 11, 13, 33, 39, 137, 143, 349, 411, 429, 1047, 1507, 1781, 3839, 4521, 4537, 5343, 11517, 13611, 19591, 47813, 49907, 58773, 143439, 149721, 525943, 621569, 1577829, 1864707, 6837259, 20511777]

約数ペア:

[(1, 20511777), (3, 6837259), (11, 1864707), (13, 1577829), (33, 621569), (39, 525943), (137, 149721), (143, 143439), (349, 58773), (411, 49907), (429, 47813), (1047, 19591), (1507, 13611), (1781, 11517), (3839, 5343), (4521, 4537)]