2798440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1627}}^1$

素因数の和:1681

約数の個数: 32

約数和(自身を含む): 6446880

約数和(自身を除く): 3648440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1627, 1720, 3254, 6508, 8135, 13016, 16270, 32540, 65080, 69961, 139922, 279844, 349805, 559688, 699610, 1399220, 2798440]

約数ペア:

[(1, 2798440), (2, 1399220), (4, 699610), (5, 559688), (8, 349805), (10, 279844), (20, 139922), (40, 69961), (43, 65080), (86, 32540), (172, 16270), (215, 13016), (344, 8135), (430, 6508), (860, 3254), (1627, 1720)]