81567580

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{4861}}^1$

素因数の和:5709

約数の個数: 24

約数和(自身を含む): 171531360

約数和(自身を除く): 89963780

約数列:

[1, 2, 4, 5, 10, 20, 839, 1678, 3356, 4195, 4861, 8390, 9722, 16780, 19444, 24305, 48610, 97220, 4078379, 8156758, 16313516, 20391895, 40783790, 81567580]

約数ペア:

[(1, 81567580), (2, 40783790), (4, 20391895), (5, 16313516), (10, 8156758), (20, 4078379), (839, 97220), (1678, 48610), (3356, 24305), (4195, 19444), (4861, 16780), (8390, 9722)]