28989620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131771}}^1$

素因数の和:131791

約数の個数: 24

約数和(自身を含む): 66413088

約数和(自身を除く): 37423468

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 131771, 263542, 527084, 658855, 1317710, 1449481, 2635420, 2898962, 5797924, 7247405, 14494810, 28989620]

約数ペア:

[(1, 28989620), (2, 14494810), (4, 7247405), (5, 5797924), (10, 2898962), (11, 2635420), (20, 1449481), (22, 1317710), (44, 658855), (55, 527084), (110, 263542), (220, 131771)]