30902781

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:290

約数の個数: 48

約数和(自身を含む): 52450944

約数和(自身を除く): 21548163

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 103, 147, 157, 273, 309, 471, 637, 721, 1099, 1339, 1911, 2041, 2163, 3297, 4017, 5047, 6123, 7693, 9373, 14287, 15141, 16171, 23079, 28119, 42861, 48513, 65611, 100009, 113197, 196833, 210223, 300027, 339591, 630669, 792379, 1471561, 2377137, 4414683, 10300927, 30902781]

約数ペア:

[(1, 30902781), (3, 10300927), (7, 4414683), (13, 2377137), (21, 1471561), (39, 792379), (49, 630669), (91, 339591), (103, 300027), (147, 210223), (157, 196833), (273, 113197), (309, 100009), (471, 65611), (637, 48513), (721, 42861), (1099, 28119), (1339, 23079), (1911, 16171), (2041, 15141), (2163, 14287), (3297, 9373), (4017, 7693), (5047, 6123)]