261135381

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 396481344

約数和(自身を除く): 135345963

約数列:

[1, 3, 13, 37, 39, 67, 73, 111, 201, 219, 481, 871, 949, 1369, 1443, 2479, 2613, 2701, 2847, 4107, 4891, 7437, 8103, 14673, 17797, 32227, 35113, 53391, 63583, 91723, 96681, 99937, 105339, 180967, 190749, 275169, 299811, 542901, 1192399, 1299181, 2352571, 3577197, 3897543, 6695779, 7057713, 20087337, 87045127, 261135381]

約数ペア:

[(1, 261135381), (3, 87045127), (13, 20087337), (37, 7057713), (39, 6695779), (67, 3897543), (73, 3577197), (111, 2352571), (201, 1299181), (219, 1192399), (481, 542901), (871, 299811), (949, 275169), (1369, 190749), (1443, 180967), (2479, 105339), (2613, 99937), (2701, 96681), (2847, 91723), (4107, 63583), (4891, 53391), (7437, 35113), (8103, 32227), (14673, 17797)]