21766745

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4349}}^1$

素因数の和:4385

約数の個数: 32

約数和(自身を含む): 35078400

約数和(自身を除く): 13311655

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 4349, 5005, 21745, 30443, 47839, 56537, 152215, 239195, 282685, 334873, 395759, 621907, 1674365, 1978795, 3109535, 4353349, 21766745]

約数ペア:

[(1, 21766745), (5, 4353349), (7, 3109535), (11, 1978795), (13, 1674365), (35, 621907), (55, 395759), (65, 334873), (77, 282685), (91, 239195), (143, 152215), (385, 56537), (455, 47839), (715, 30443), (1001, 21745), (4349, 5005)]