21188439

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{401}}^1$

素因数の和:532

約数の個数: 32

約数和(自身を含む): 33446400

約数和(自身を除く): 12257961

約数列:

[1, 3, 9, 19, 27, 57, 103, 171, 309, 401, 513, 927, 1203, 1957, 2781, 3609, 5871, 7619, 10827, 17613, 22857, 41303, 52839, 68571, 123909, 205713, 371727, 784757, 1115181, 2354271, 7062813, 21188439]

約数ペア:

[(1, 21188439), (3, 7062813), (9, 2354271), (19, 1115181), (27, 784757), (57, 371727), (103, 205713), (171, 123909), (309, 68571), (401, 52839), (513, 41303), (927, 22857), (1203, 17613), (1957, 10827), (2781, 7619), (3609, 5871)]