21345081

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{587}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 32514048

約数和(自身を除く): 11168967

約数列:

[1, 3, 17, 23, 31, 51, 69, 93, 391, 527, 587, 713, 1173, 1581, 1761, 2139, 9979, 12121, 13501, 18197, 29937, 36363, 40503, 54591, 229517, 309349, 418531, 688551, 928047, 1255593, 7115027, 21345081]

約数ペア:

[(1, 21345081), (3, 7115027), (17, 1255593), (23, 928047), (31, 688551), (51, 418531), (69, 309349), (93, 229517), (391, 54591), (527, 40503), (587, 36363), (713, 29937), (1173, 18197), (1581, 13501), (1761, 12121), (2139, 9979)]