21289695

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11927}}^1$

素因数の和:11959

約数の個数: 32

約数和(自身を含む): 41223168

約数和(自身を除く): 19933473

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 11927, 35781, 59635, 83489, 178905, 202759, 250467, 417445, 608277, 1013795, 1252335, 1419313, 3041385, 4257939, 7096565, 21289695]

約数ペア:

[(1, 21289695), (3, 7096565), (5, 4257939), (7, 3041385), (15, 1419313), (17, 1252335), (21, 1013795), (35, 608277), (51, 417445), (85, 250467), (105, 202759), (119, 178905), (255, 83489), (357, 59635), (595, 35781), (1785, 11927)]