18455120

素因数分解:

$2^4\times 5^1\times {\mathrm{349}}^1\times {\mathrm{661}}^1$

素因数の和:1023

約数の個数: 40

約数和(自身を含む): 43096200

約数和(自身を除く): 24641080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 349, 661, 698, 1322, 1396, 1745, 2644, 2792, 3305, 3490, 5288, 5584, 6610, 6980, 10576, 13220, 13960, 26440, 27920, 52880, 230689, 461378, 922756, 1153445, 1845512, 2306890, 3691024, 4613780, 9227560, 18455120]

約数ペア:

[(1, 18455120), (2, 9227560), (4, 4613780), (5, 3691024), (8, 2306890), (10, 1845512), (16, 1153445), (20, 922756), (40, 461378), (80, 230689), (349, 52880), (661, 27920), (698, 26440), (1322, 13960), (1396, 13220), (1745, 10576), (2644, 6980), (2792, 6610), (3305, 5584), (3490, 5288)]