20320664

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{271}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 47523840

約数和(自身を除く): 27203176

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 103, 104, 182, 206, 271, 364, 412, 542, 721, 728, 824, 1084, 1339, 1442, 1897, 2168, 2678, 2884, 3523, 3794, 5356, 5768, 7046, 7588, 9373, 10712, 14092, 15176, 18746, 24661, 27913, 28184, 37492, 49322, 55826, 74984, 98644, 111652, 195391, 197288, 223304, 362869, 390782, 725738, 781564, 1451476, 1563128, 2540083, 2902952, 5080166, 10160332, 20320664]

約数ペア:

[(1, 20320664), (2, 10160332), (4, 5080166), (7, 2902952), (8, 2540083), (13, 1563128), (14, 1451476), (26, 781564), (28, 725738), (52, 390782), (56, 362869), (91, 223304), (103, 197288), (104, 195391), (182, 111652), (206, 98644), (271, 74984), (364, 55826), (412, 49322), (542, 37492), (721, 28184), (728, 27913), (824, 24661), (1084, 18746), (1339, 15176), (1442, 14092), (1897, 10712), (2168, 9373), (2678, 7588), (2884, 7046), (3523, 5768), (3794, 5356)]