20785605

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{673}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 34940160

約数和(自身を除く): 14154555

約数列:

[1, 3, 5, 15, 29, 71, 87, 145, 213, 355, 435, 673, 1065, 2019, 2059, 3365, 6177, 10095, 10295, 19517, 30885, 47783, 58551, 97585, 143349, 238915, 292755, 716745, 1385707, 4157121, 6928535, 20785605]

約数ペア:

[(1, 20785605), (3, 6928535), (5, 4157121), (15, 1385707), (29, 716745), (71, 292755), (87, 238915), (145, 143349), (213, 97585), (355, 58551), (435, 47783), (673, 30885), (1065, 19517), (2019, 10295), (2059, 10095), (3365, 6177)]