18000545

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:512

約数の個数: 16

約数和(自身を含む): 22080000

約数和(自身を除く): 4079455

約数列:

[1, 5, 79, 199, 229, 395, 995, 1145, 15721, 18091, 45571, 78605, 90455, 227855, 3600109, 18000545]

約数ペア:

[(1, 18000545), (5, 3600109), (79, 227855), (199, 90455), (229, 78605), (395, 45571), (995, 18091), (1145, 15721)]