21890349

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{839}}^1$

素因数の和:1081

約数の個数: 24

約数和(自身を含む): 34245120

約数和(自身を除く): 12354771

約数列:

[1, 3, 9, 13, 39, 117, 223, 669, 839, 2007, 2517, 2899, 7551, 8697, 10907, 26091, 32721, 98163, 187097, 561291, 1683873, 2432261, 7296783, 21890349]

約数ペア:

[(1, 21890349), (3, 7296783), (9, 2432261), (13, 1683873), (39, 561291), (117, 187097), (223, 98163), (669, 32721), (839, 26091), (2007, 10907), (2517, 8697), (2899, 7551)]