20856760

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2297}}^1$

素因数の和:2535

約数の個数: 32

約数和(自身を含む): 47154960

約数和(自身を除く): 26298200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2270, 2297, 4540, 4594, 9080, 9188, 11485, 18376, 22970, 45940, 91880, 521419, 1042838, 2085676, 2607095, 4171352, 5214190, 10428380, 20856760]

約数ペア:

[(1, 20856760), (2, 10428380), (4, 5214190), (5, 4171352), (8, 2607095), (10, 2085676), (20, 1042838), (40, 521419), (227, 91880), (454, 45940), (908, 22970), (1135, 18376), (1816, 11485), (2270, 9188), (2297, 9080), (4540, 4594)]