399958559

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{12889}}^1$

素因数の和:12951

約数の個数: 32

約数和(自身を含む): 554373120

約数和(自身を除く): 154414561

約数列:

[1, 7, 11, 13, 31, 77, 91, 143, 217, 341, 403, 1001, 2387, 2821, 4433, 12889, 31031, 90223, 141779, 167557, 399559, 992453, 1172899, 1843127, 2796913, 4395149, 5194267, 12901889, 30766043, 36359869, 57136937, 399958559]

約数ペア:

[(1, 399958559), (7, 57136937), (11, 36359869), (13, 30766043), (31, 12901889), (77, 5194267), (91, 4395149), (143, 2796913), (217, 1843127), (341, 1172899), (403, 992453), (1001, 399559), (2387, 167557), (2821, 141779), (4433, 90223), (12889, 31031)]