28115361

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1913}}^1$

素因数の和:2013

約数の個数: 24

約数和(自身を含む): 42996096

約数和(自身を除く): 14880735

約数列:

[1, 3, 9, 23, 69, 71, 207, 213, 639, 1633, 1913, 4899, 5739, 14697, 17217, 43999, 131997, 135823, 395991, 407469, 1222407, 3123929, 9371787, 28115361]

約数ペア:

[(1, 28115361), (3, 9371787), (9, 3123929), (23, 1222407), (69, 407469), (71, 395991), (207, 135823), (213, 131997), (639, 43999), (1633, 17217), (1913, 14697), (4899, 5739)]