20751339

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1571}}^1$

素因数の和:1635

約数の個数: 32

約数和(自身を含む): 34407936

約数和(自身を除く): 13656597

約数列:

[1, 3, 7, 17, 21, 37, 51, 111, 119, 259, 357, 629, 777, 1571, 1887, 4403, 4713, 10997, 13209, 26707, 32991, 58127, 80121, 174381, 186949, 406889, 560847, 988159, 1220667, 2964477, 6917113, 20751339]

約数ペア:

[(1, 20751339), (3, 6917113), (7, 2964477), (17, 1220667), (21, 988159), (37, 560847), (51, 406889), (111, 186949), (119, 174381), (259, 80121), (357, 58127), (629, 32991), (777, 26707), (1571, 13209), (1887, 10997), (4403, 4713)]