21816548

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{59}}^1\times {\mathrm{547}}^1$

素因数の和:636

約数の個数: 36

約数和(自身を含む): 42119280

約数和(自身を除く): 20302732

約数列:

[1, 2, 4, 13, 26, 52, 59, 118, 169, 236, 338, 547, 676, 767, 1094, 1534, 2188, 3068, 7111, 9971, 14222, 19942, 28444, 32273, 39884, 64546, 92443, 129092, 184886, 369772, 419549, 839098, 1678196, 5454137, 10908274, 21816548]

約数ペア:

[(1, 21816548), (2, 10908274), (4, 5454137), (13, 1678196), (26, 839098), (52, 419549), (59, 369772), (118, 184886), (169, 129092), (236, 92443), (338, 64546), (547, 39884), (676, 32273), (767, 28444), (1094, 19942), (1534, 14222), (2188, 9971), (3068, 7111)]