20938239

素因数分解:

$3^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{601}}^1$

素因数の和:700

約数の個数: 36

約数和(自身を含む): 35686560

約数和(自身を除く): 14748321

約数列:

[1, 3, 7, 9, 21, 49, 63, 79, 147, 237, 441, 553, 601, 711, 1659, 1803, 3871, 4207, 4977, 5409, 11613, 12621, 29449, 34839, 37863, 47479, 88347, 142437, 265041, 332353, 427311, 997059, 2326471, 2991177, 6979413, 20938239]

約数ペア:

[(1, 20938239), (3, 6979413), (7, 2991177), (9, 2326471), (21, 997059), (49, 427311), (63, 332353), (79, 265041), (147, 142437), (237, 88347), (441, 47479), (553, 37863), (601, 34839), (711, 29449), (1659, 12621), (1803, 11613), (3871, 5409), (4207, 4977)]