20451765

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{577}}^1$

素因数の和:741

約数の個数: 32

約数和(自身を含む): 34957440

約数和(自身を除く): 14505675

約数列:

[1, 3, 5, 15, 17, 51, 85, 139, 255, 417, 577, 695, 1731, 2085, 2363, 2885, 7089, 8655, 9809, 11815, 29427, 35445, 49045, 80203, 147135, 240609, 401015, 1203045, 1363451, 4090353, 6817255, 20451765]

約数ペア:

[(1, 20451765), (3, 6817255), (5, 4090353), (15, 1363451), (17, 1203045), (51, 401015), (85, 240609), (139, 147135), (255, 80203), (417, 49045), (577, 35445), (695, 29427), (1731, 11815), (2085, 9809), (2363, 8655), (2885, 7089)]