20101809

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 34294848

約数和(自身を除く): 14193039

約数列:

[1, 3, 7, 13, 21, 39, 49, 67, 91, 147, 157, 201, 273, 469, 471, 637, 871, 1099, 1407, 1911, 2041, 2613, 3283, 3297, 6097, 6123, 7693, 9849, 10519, 14287, 18291, 23079, 31557, 42679, 42861, 73633, 100009, 128037, 136747, 220899, 300027, 410241, 515431, 957229, 1546293, 2871687, 6700603, 20101809]

約数ペア:

[(1, 20101809), (3, 6700603), (7, 2871687), (13, 1546293), (21, 957229), (39, 515431), (49, 410241), (67, 300027), (91, 220899), (147, 136747), (157, 128037), (201, 100009), (273, 73633), (469, 42861), (471, 42679), (637, 31557), (871, 23079), (1099, 18291), (1407, 14287), (1911, 10519), (2041, 9849), (2613, 7693), (3283, 6123), (3297, 6097)]