12720227545

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{1481}}^1\times {\mathrm{19301}}^1$

素因数の和:20876

約数の個数: 16

約数和(自身を含む): 15447004560

約数和(自身を除く): 2726777015

約数列:

[1, 5, 89, 445, 1481, 7405, 19301, 96505, 131809, 659045, 1717789, 8588945, 28584781, 142923905, 2544045509, 12720227545]

約数ペア:

[(1, 12720227545), (5, 2544045509), (89, 142923905), (445, 28584781), (1481, 8588945), (7405, 1717789), (19301, 659045), (96505, 131809)]