20825704

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{63493}}^1$

素因数の和:63540

約数の個数: 16

約数和(自身を含む): 40001220

約数和(自身を除く): 19175516

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 63493, 126986, 253972, 507944, 2603213, 5206426, 10412852, 20825704]

約数ペア:

[(1, 20825704), (2, 10412852), (4, 5206426), (8, 2603213), (41, 507944), (82, 253972), (164, 126986), (328, 63493)]