20904674

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:247

約数の個数: 48

約数和(自身を含む): 39124800

約数和(自身を除く): 18220126

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 103, 109, 133, 206, 218, 266, 721, 763, 931, 1442, 1526, 1862, 1957, 2071, 3914, 4142, 5047, 5341, 10094, 10682, 11227, 13699, 14497, 22454, 27398, 28994, 78589, 95893, 101479, 157178, 191786, 202958, 213313, 426626, 550123, 1100246, 1493191, 2986382, 10452337, 20904674]

約数ペア:

[(1, 20904674), (2, 10452337), (7, 2986382), (14, 1493191), (19, 1100246), (38, 550123), (49, 426626), (98, 213313), (103, 202958), (109, 191786), (133, 157178), (206, 101479), (218, 95893), (266, 78589), (721, 28994), (763, 27398), (931, 22454), (1442, 14497), (1526, 13699), (1862, 11227), (1957, 10682), (2071, 10094), (3914, 5341), (4142, 5047)]