390465370

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1\times {\mathrm{1987}}^1$

素因数の和:2494

約数の個数: 32

約数和(自身を含む): 721119168

約数和(自身を除く): 330653798

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 457, 914, 1987, 2285, 3974, 4570, 9935, 19651, 19870, 39302, 85441, 98255, 170882, 196510, 427205, 854410, 908059, 1816118, 4540295, 9080590, 39046537, 78093074, 195232685, 390465370]

約数ペア:

[(1, 390465370), (2, 195232685), (5, 78093074), (10, 39046537), (43, 9080590), (86, 4540295), (215, 1816118), (430, 908059), (457, 854410), (914, 427205), (1987, 196510), (2285, 170882), (3974, 98255), (4570, 85441), (9935, 39302), (19651, 19870)]