20520008

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{857}}^1$

素因数の和:977

約数の個数: 32

約数和(自身を含む): 39999960

約数和(自身を除く): 19479952

約数列:

[1, 2, 4, 8, 41, 73, 82, 146, 164, 292, 328, 584, 857, 1714, 2993, 3428, 5986, 6856, 11972, 23944, 35137, 62561, 70274, 125122, 140548, 250244, 281096, 500488, 2565001, 5130002, 10260004, 20520008]

約数ペア:

[(1, 20520008), (2, 10260004), (4, 5130002), (8, 2565001), (41, 500488), (73, 281096), (82, 250244), (146, 140548), (164, 125122), (292, 70274), (328, 62561), (584, 35137), (857, 23944), (1714, 11972), (2993, 6856), (3428, 5986)]