20957355

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{307}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 38342304

約数和(自身を除く): 17384949

約数列:

[1, 3, 5, 9, 15, 37, 41, 45, 111, 123, 185, 205, 307, 333, 369, 555, 615, 921, 1517, 1535, 1665, 1845, 2763, 4551, 4605, 7585, 11359, 12587, 13653, 13815, 22755, 34077, 37761, 56795, 62935, 68265, 102231, 113283, 170385, 188805, 465719, 511155, 566415, 1397157, 2328595, 4191471, 6985785, 20957355]

約数ペア:

[(1, 20957355), (3, 6985785), (5, 4191471), (9, 2328595), (15, 1397157), (37, 566415), (41, 511155), (45, 465719), (111, 188805), (123, 170385), (185, 113283), (205, 102231), (307, 68265), (333, 62935), (369, 56795), (555, 37761), (615, 34077), (921, 22755), (1517, 13815), (1535, 13653), (1665, 12587), (1845, 11359), (2763, 7585), (4551, 4605)]