21561255

素因数分解:

$3^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{2707}}^1$

素因数の和:2780

約数の個数: 32

約数和(自身を含む): 38995200

約数和(自身を除く): 17433945

約数列:

[1, 3, 5, 9, 15, 27, 45, 59, 135, 177, 295, 531, 885, 1593, 2655, 2707, 7965, 8121, 13535, 24363, 40605, 73089, 121815, 159713, 365445, 479139, 798565, 1437417, 2395695, 4312251, 7187085, 21561255]

約数ペア:

[(1, 21561255), (3, 7187085), (5, 4312251), (9, 2395695), (15, 1437417), (27, 798565), (45, 479139), (59, 365445), (135, 159713), (177, 121815), (295, 73089), (531, 40605), (885, 24363), (1593, 13535), (2655, 8121), (2707, 7965)]