28376405

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:321

約数の個数: 24

約数和(自身を含む): 36576000

約数和(自身を除く): 8199595

約数列:

[1, 5, 19, 79, 95, 199, 361, 395, 995, 1501, 1805, 3781, 7505, 15721, 18905, 28519, 71839, 78605, 142595, 298699, 359195, 1493495, 5675281, 28376405]

約数ペア:

[(1, 28376405), (5, 5675281), (19, 1493495), (79, 359195), (95, 298699), (199, 142595), (361, 78605), (395, 71839), (995, 28519), (1501, 18905), (1805, 15721), (3781, 7505)]