123207920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{140009}}^1$

素因数の和:140033

約数の個数: 40

約数和(自身を含む): 312502320

約数和(自身を除く): 189294400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 140009, 280018, 560036, 700045, 1120072, 1400090, 1540099, 2240144, 2800180, 3080198, 5600360, 6160396, 7700495, 11200720, 12320792, 15400990, 24641584, 30801980, 61603960, 123207920]

約数ペア:

[(1, 123207920), (2, 61603960), (4, 30801980), (5, 24641584), (8, 15400990), (10, 12320792), (11, 11200720), (16, 7700495), (20, 6160396), (22, 5600360), (40, 3080198), (44, 2800180), (55, 2240144), (80, 1540099), (88, 1400090), (110, 1120072), (176, 700045), (220, 560036), (440, 280018), (880, 140009)]