13721247

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:383

約数の個数: 24

約数和(自身を含む): 20386080

約数和(自身を除く): 6664833

約数列:

[1, 3, 9, 71, 109, 197, 213, 327, 591, 639, 981, 1773, 7739, 13987, 21473, 23217, 41961, 64419, 69651, 125883, 193257, 1524583, 4573749, 13721247]

約数ペア:

[(1, 13721247), (3, 4573749), (9, 1524583), (71, 193257), (109, 125883), (197, 69651), (213, 64419), (327, 41961), (591, 23217), (639, 21473), (981, 13987), (1773, 7739)]