39721857

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{401}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 62519040

約数和(自身を除く): 22797183

約数列:

[1, 3, 7, 21, 53, 89, 159, 267, 371, 401, 623, 1113, 1203, 1869, 2807, 4717, 8421, 14151, 21253, 33019, 35689, 63759, 99057, 107067, 148771, 249823, 446313, 749469, 1891517, 5674551, 13240619, 39721857]

約数ペア:

[(1, 39721857), (3, 13240619), (7, 5674551), (21, 1891517), (53, 749469), (89, 446313), (159, 249823), (267, 148771), (371, 107067), (401, 99057), (623, 63759), (1113, 35689), (1203, 33019), (1869, 21253), (2807, 14151), (4717, 8421)]