21967185

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{1553}}^1$

素因数の和:1625

約数の個数: 32

約数和(自身を含む): 37594368

約数和(自身を除く): 15627183

約数列:

[1, 3, 5, 15, 23, 41, 69, 115, 123, 205, 345, 615, 943, 1553, 2829, 4659, 4715, 7765, 14145, 23295, 35719, 63673, 107157, 178595, 191019, 318365, 535785, 955095, 1464479, 4393437, 7322395, 21967185]

約数ペア:

[(1, 21967185), (3, 7322395), (5, 4393437), (15, 1464479), (23, 955095), (41, 535785), (69, 318365), (115, 191019), (123, 178595), (205, 107157), (345, 63673), (615, 35719), (943, 23295), (1553, 14145), (2829, 7765), (4659, 4715)]