18920461

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{439}}^1$

素因数の和:624

約数の個数: 16

約数和(自身を含む): 22302720

約数和(自身を除く): 3382259

約数列:

[1, 7, 47, 131, 329, 439, 917, 3073, 6157, 20633, 43099, 57509, 144431, 402563, 2702923, 18920461]

約数ペア:

[(1, 18920461), (7, 2702923), (47, 402563), (131, 144431), (329, 57509), (439, 43099), (917, 20633), (3073, 6157)]