20856745

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1993}}^1$

素因数の和:2041

約数の個数: 32

約数和(自身を含む): 32159232

約数和(自身を除く): 11302487

約数列:

[1, 5, 7, 13, 23, 35, 65, 91, 115, 161, 299, 455, 805, 1495, 1993, 2093, 9965, 10465, 13951, 25909, 45839, 69755, 129545, 181363, 229195, 320873, 595907, 906815, 1604365, 2979535, 4171349, 20856745]

約数ペア:

[(1, 20856745), (5, 4171349), (7, 2979535), (13, 1604365), (23, 906815), (35, 595907), (65, 320873), (91, 229195), (115, 181363), (161, 129545), (299, 69755), (455, 45839), (805, 25909), (1495, 13951), (1993, 10465), (2093, 9965)]