19985296

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1$

素因数の和:359

約数の個数: 40

約数和(自身を含む): 39900224

約数和(自身を除く): 19914928

約数列:

[1, 2, 4, 8, 16, 67, 103, 134, 181, 206, 268, 362, 412, 536, 724, 824, 1072, 1448, 1648, 2896, 6901, 12127, 13802, 18643, 24254, 27604, 37286, 48508, 55208, 74572, 97016, 110416, 149144, 194032, 298288, 1249081, 2498162, 4996324, 9992648, 19985296]

約数ペア:

[(1, 19985296), (2, 9992648), (4, 4996324), (8, 2498162), (16, 1249081), (67, 298288), (103, 194032), (134, 149144), (181, 110416), (206, 97016), (268, 74572), (362, 55208), (412, 48508), (536, 37286), (724, 27604), (824, 24254), (1072, 18643), (1448, 13802), (1648, 12127), (2896, 6901)]