21748573

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^2$

素因数の和:225

約数の個数: 24

約数和(自身を含む): 28115136

約数和(自身を除く): 6366563

約数列:

[1, 7, 11, 41, 77, 83, 287, 451, 581, 913, 3157, 3403, 6391, 6889, 23821, 37433, 48223, 75779, 262031, 282449, 530453, 1977143, 3106939, 21748573]

約数ペア:

[(1, 21748573), (7, 3106939), (11, 1977143), (41, 530453), (77, 282449), (83, 262031), (287, 75779), (451, 48223), (581, 37433), (913, 23821), (3157, 6889), (3403, 6391)]