21284935

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{431}}^1$

素因数の和:543

約数の個数: 32

約数和(自身を含む): 31352832

約数和(自身を除く): 10067897

約数列:

[1, 5, 7, 17, 35, 83, 85, 119, 415, 431, 581, 595, 1411, 2155, 2905, 3017, 7055, 7327, 9877, 15085, 35773, 36635, 49385, 51289, 178865, 250411, 256445, 608141, 1252055, 3040705, 4256987, 21284935]

約数ペア:

[(1, 21284935), (5, 4256987), (7, 3040705), (17, 1252055), (35, 608141), (83, 256445), (85, 250411), (119, 178865), (415, 51289), (431, 49385), (581, 36635), (595, 35773), (1411, 15085), (2155, 9877), (2905, 7327), (3017, 7055)]