21523437

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2591}}^1$

素因数の和:2681

約数の個数: 24

約数和(自身を含む): 33965568

約数和(自身を除く): 12442131

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2591, 2769, 7773, 8307, 23319, 33683, 101049, 183961, 303147, 551883, 1655649, 2391493, 7174479, 21523437]

約数ペア:

[(1, 21523437), (3, 7174479), (9, 2391493), (13, 1655649), (39, 551883), (71, 303147), (117, 183961), (213, 101049), (639, 33683), (923, 23319), (2591, 8307), (2769, 7773)]