20709255

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1553}}^1$

素因数の和:1695

約数の個数: 32

約数和(自身を含む): 38191104

約数和(自身を除く): 17481849

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 127, 381, 635, 889, 1553, 1905, 2667, 4445, 4659, 7765, 10871, 13335, 23295, 32613, 54355, 163065, 197231, 591693, 986155, 1380617, 2958465, 4141851, 6903085, 20709255]

約数ペア:

[(1, 20709255), (3, 6903085), (5, 4141851), (7, 2958465), (15, 1380617), (21, 986155), (35, 591693), (105, 197231), (127, 163065), (381, 54355), (635, 32613), (889, 23295), (1553, 13335), (1905, 10871), (2667, 7765), (4445, 4659)]