21945045

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{2099}}^1$

素因数の和:2165

約数の個数: 32

約数和(自身を含む): 38102400

約数和(自身を除く): 16157355

約数列:

[1, 3, 5, 15, 17, 41, 51, 85, 123, 205, 255, 615, 697, 2091, 2099, 3485, 6297, 10455, 10495, 31485, 35683, 86059, 107049, 178415, 258177, 430295, 535245, 1290885, 1463003, 4389009, 7315015, 21945045]

約数ペア:

[(1, 21945045), (3, 7315015), (5, 4389009), (15, 1463003), (17, 1290885), (41, 535245), (51, 430295), (85, 258177), (123, 178415), (205, 107049), (255, 86059), (615, 35683), (697, 31485), (2091, 10495), (2099, 10455), (3485, 6297)]