20287785

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{4111}}^1$

素因数の和:4173

約数の個数: 32

約数和(自身を含む): 37896192

約数和(自身を除く): 17608407

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 105, 141, 235, 329, 705, 987, 1645, 4111, 4935, 12333, 20555, 28777, 61665, 86331, 143885, 193217, 431655, 579651, 966085, 1352519, 2898255, 4057557, 6762595, 20287785]

約数ペア:

[(1, 20287785), (3, 6762595), (5, 4057557), (7, 2898255), (15, 1352519), (21, 966085), (35, 579651), (47, 431655), (105, 193217), (141, 143885), (235, 86331), (329, 61665), (705, 28777), (987, 20555), (1645, 12333), (4111, 4935)]