20617828

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 46769184

約数和(自身を除く): 26151356

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 73, 77, 98, 131, 146, 154, 196, 262, 292, 308, 511, 524, 539, 803, 917, 1022, 1078, 1441, 1606, 1834, 2044, 2156, 2882, 3212, 3577, 3668, 5621, 5764, 6419, 7154, 9563, 10087, 11242, 12838, 14308, 19126, 20174, 22484, 25676, 38252, 39347, 40348, 66941, 70609, 78694, 105193, 133882, 141218, 157388, 210386, 267764, 282436, 420772, 468587, 736351, 937174, 1472702, 1874348, 2945404, 5154457, 10308914, 20617828]

約数ペア:

[(1, 20617828), (2, 10308914), (4, 5154457), (7, 2945404), (11, 1874348), (14, 1472702), (22, 937174), (28, 736351), (44, 468587), (49, 420772), (73, 282436), (77, 267764), (98, 210386), (131, 157388), (146, 141218), (154, 133882), (196, 105193), (262, 78694), (292, 70609), (308, 66941), (511, 40348), (524, 39347), (539, 38252), (803, 25676), (917, 22484), (1022, 20174), (1078, 19126), (1441, 14308), (1606, 12838), (1834, 11242), (2044, 10087), (2156, 9563), (2882, 7154), (3212, 6419), (3577, 5764), (3668, 5621)]