20289412

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{449}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 22046588

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 79, 143, 158, 286, 316, 449, 572, 869, 898, 1027, 1738, 1796, 2054, 3476, 4108, 4939, 5837, 9878, 11297, 11674, 19756, 22594, 23348, 35471, 45188, 64207, 70942, 128414, 141884, 256828, 390181, 461123, 780362, 922246, 1560724, 1844492, 5072353, 10144706, 20289412]

約数ペア:

[(1, 20289412), (2, 10144706), (4, 5072353), (11, 1844492), (13, 1560724), (22, 922246), (26, 780362), (44, 461123), (52, 390181), (79, 256828), (143, 141884), (158, 128414), (286, 70942), (316, 64207), (449, 45188), (572, 35471), (869, 23348), (898, 22594), (1027, 19756), (1738, 11674), (1796, 11297), (2054, 9878), (3476, 5837), (4108, 4939)]