18682640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5431}}^1$

素因数の和:5487

約数の個数: 40

約数和(自身を含む): 44455488

約数和(自身を除く): 25772848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5431, 10862, 21724, 27155, 43448, 54310, 86896, 108620, 217240, 233533, 434480, 467066, 934132, 1167665, 1868264, 2335330, 3736528, 4670660, 9341320, 18682640]

約数ペア:

[(1, 18682640), (2, 9341320), (4, 4670660), (5, 3736528), (8, 2335330), (10, 1868264), (16, 1167665), (20, 934132), (40, 467066), (43, 434480), (80, 233533), (86, 217240), (172, 108620), (215, 86896), (344, 54310), (430, 43448), (688, 27155), (860, 21724), (1720, 10862), (3440, 5431)]