638291205

素因数分解:

$3^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1\times {\mathrm{631}}^1$

素因数の和:831

約数の個数: 64

約数和(自身を含む): 1164902400

約数和(自身を除く): 526611195

約数列:

[1, 3, 5, 9, 15, 27, 45, 59, 127, 135, 177, 295, 381, 531, 631, 635, 885, 1143, 1593, 1893, 1905, 2655, 3155, 3429, 5679, 5715, 7493, 7965, 9465, 17037, 17145, 22479, 28395, 37229, 37465, 67437, 80137, 85185, 111687, 112395, 186145, 202311, 240411, 335061, 337185, 400685, 558435, 721233, 1005183, 1011555, 1202055, 1675305, 2163699, 3606165, 4728083, 5025915, 10818495, 14184249, 23640415, 42552747, 70921245, 127658241, 212763735, 638291205]

約数ペア:

[(1, 638291205), (3, 212763735), (5, 127658241), (9, 70921245), (15, 42552747), (27, 23640415), (45, 14184249), (59, 10818495), (127, 5025915), (135, 4728083), (177, 3606165), (295, 2163699), (381, 1675305), (531, 1202055), (631, 1011555), (635, 1005183), (885, 721233), (1143, 558435), (1593, 400685), (1893, 337185), (1905, 335061), (2655, 240411), (3155, 202311), (3429, 186145), (5679, 112395), (5715, 111687), (7493, 85185), (7965, 80137), (9465, 67437), (17037, 37465), (17145, 37229), (22479, 28395)]