78327920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89009}}^1$

素因数の和:89033

約数の個数: 40

約数和(自身を含む): 198670320

約数和(自身を除く): 120342400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 89009, 178018, 356036, 445045, 712072, 890090, 979099, 1424144, 1780180, 1958198, 3560360, 3916396, 4895495, 7120720, 7832792, 9790990, 15665584, 19581980, 39163960, 78327920]

約数ペア:

[(1, 78327920), (2, 39163960), (4, 19581980), (5, 15665584), (8, 9790990), (10, 7832792), (11, 7120720), (16, 4895495), (20, 3916396), (22, 3560360), (40, 1958198), (44, 1780180), (55, 1424144), (80, 979099), (88, 890090), (110, 712072), (176, 445045), (220, 356036), (440, 178018), (880, 89009)]