20401815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{2341}}^1$

素因数の和:2439

約数の個数: 32

約数和(自身を含む): 37771776

約数和(自身を除く): 17369961

約数列:

[1, 3, 5, 7, 15, 21, 35, 83, 105, 249, 415, 581, 1245, 1743, 2341, 2905, 7023, 8715, 11705, 16387, 35115, 49161, 81935, 194303, 245805, 582909, 971515, 1360121, 2914545, 4080363, 6800605, 20401815]

約数ペア:

[(1, 20401815), (3, 6800605), (5, 4080363), (7, 2914545), (15, 1360121), (21, 971515), (35, 582909), (83, 245805), (105, 194303), (249, 81935), (415, 49161), (581, 35115), (1245, 16387), (1743, 11705), (2341, 8715), (2905, 7023)]