21403863

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2999}}^1$

素因数の和:3079

約数の個数: 24

約数和(自身を含む): 33852000

約数和(自身を除く): 12448137

約数列:

[1, 3, 9, 13, 39, 61, 117, 183, 549, 793, 2379, 2999, 7137, 8997, 26991, 38987, 116961, 182939, 350883, 548817, 1646451, 2378207, 7134621, 21403863]

約数ペア:

[(1, 21403863), (3, 7134621), (9, 2378207), (13, 1646451), (39, 548817), (61, 350883), (117, 182939), (183, 116961), (549, 38987), (793, 26991), (2379, 8997), (2999, 7137)]