81871240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{186071}}^1$

素因数の和:186093

約数の個数: 32

約数和(自身を含む): 200957760

約数和(自身を除く): 119086520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 186071, 372142, 744284, 930355, 1488568, 1860710, 2046781, 3721420, 4093562, 7442840, 8187124, 10233905, 16374248, 20467810, 40935620, 81871240]

約数ペア:

[(1, 81871240), (2, 40935620), (4, 20467810), (5, 16374248), (8, 10233905), (10, 8187124), (11, 7442840), (20, 4093562), (22, 3721420), (40, 2046781), (44, 1860710), (55, 1488568), (88, 930355), (110, 744284), (220, 372142), (440, 186071)]