68677880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{39929}}^1$

素因数の和:39983

約数の個数: 32

約数和(自身を含む): 158122800

約数和(自身を除く): 89444920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 39929, 79858, 159716, 199645, 319432, 399290, 798580, 1597160, 1716947, 3433894, 6867788, 8584735, 13735576, 17169470, 34338940, 68677880]

約数ペア:

[(1, 68677880), (2, 34338940), (4, 17169470), (5, 13735576), (8, 8584735), (10, 6867788), (20, 3433894), (40, 1716947), (43, 1597160), (86, 798580), (172, 399290), (215, 319432), (344, 199645), (430, 159716), (860, 79858), (1720, 39929)]