20988388

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{1759}}^1$

素因数の和:1939

約数の個数: 24

約数和(自身を含む): 38931200

約数和(自身を除く): 17942812

約数列:

[1, 2, 4, 19, 38, 76, 157, 314, 628, 1759, 2983, 3518, 5966, 7036, 11932, 33421, 66842, 133684, 276163, 552326, 1104652, 5247097, 10494194, 20988388]

約数ペア:

[(1, 20988388), (2, 10494194), (4, 5247097), (19, 1104652), (38, 552326), (76, 276163), (157, 133684), (314, 66842), (628, 33421), (1759, 11932), (2983, 7036), (3518, 5966)]