218489020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{1063}}^1$

素因数の和:1354

約数の個数: 48

約数和(自身を含む): 471905280

約数和(自身を除く): 253416260

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 239, 430, 478, 860, 956, 1063, 1195, 2126, 2390, 4252, 4780, 5315, 10277, 10630, 20554, 21260, 41108, 45709, 51385, 91418, 102770, 182836, 205540, 228545, 254057, 457090, 508114, 914180, 1016228, 1270285, 2540570, 5081140, 10924451, 21848902, 43697804, 54622255, 109244510, 218489020]

約数ペア:

[(1, 218489020), (2, 109244510), (4, 54622255), (5, 43697804), (10, 21848902), (20, 10924451), (43, 5081140), (86, 2540570), (172, 1270285), (215, 1016228), (239, 914180), (430, 508114), (478, 457090), (860, 254057), (956, 228545), (1063, 205540), (1195, 182836), (2126, 102770), (2390, 91418), (4252, 51385), (4780, 45709), (5315, 41108), (10277, 21260), (10630, 20554)]