20728136

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{18119}}^1$

素因数の和:18149

約数の個数: 32

約数和(自身を含む): 45662400

約数和(自身を除く): 24934264

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 18119, 36238, 72476, 144952, 199309, 235547, 398618, 471094, 797236, 942188, 1594472, 1884376, 2591017, 5182034, 10364068, 20728136]

約数ペア:

[(1, 20728136), (2, 10364068), (4, 5182034), (8, 2591017), (11, 1884376), (13, 1594472), (22, 942188), (26, 797236), (44, 471094), (52, 398618), (88, 235547), (104, 199309), (143, 144952), (286, 72476), (572, 36238), (1144, 18119)]