12889100720

素因数分解:

$2^4\times 5^1\times {\mathrm{4049}}^1\times {\mathrm{39791}}^1$

素因数の和:43853

約数の個数: 40

約数和(自身を含む): 29975313600

約数和(自身を除く): 17086212880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4049, 8098, 16196, 20245, 32392, 39791, 40490, 64784, 79582, 80980, 159164, 161960, 198955, 318328, 323920, 397910, 636656, 795820, 1591640, 3183280, 161113759, 322227518, 644455036, 805568795, 1288910072, 1611137590, 2577820144, 3222275180, 6444550360, 12889100720]

約数ペア:

[(1, 12889100720), (2, 6444550360), (4, 3222275180), (5, 2577820144), (8, 1611137590), (10, 1288910072), (16, 805568795), (20, 644455036), (40, 322227518), (80, 161113759), (4049, 3183280), (8098, 1591640), (16196, 795820), (20245, 636656), (32392, 397910), (39791, 323920), (40490, 318328), (64784, 198955), (79582, 161960), (80980, 159164)]