28981407

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2003}}^1$

素因数の和:2079

約数の個数: 32

約数和(自身を含む): 48480768

約数和(自身を除く): 19499361

約数列:

[1, 3, 7, 13, 21, 39, 53, 91, 159, 273, 371, 689, 1113, 2003, 2067, 4823, 6009, 14021, 14469, 26039, 42063, 78117, 106159, 182273, 318477, 546819, 743113, 1380067, 2229339, 4140201, 9660469, 28981407]

約数ペア:

[(1, 28981407), (3, 9660469), (7, 4140201), (13, 2229339), (21, 1380067), (39, 743113), (53, 546819), (91, 318477), (159, 182273), (273, 106159), (371, 78117), (689, 42063), (1113, 26039), (2003, 14469), (2067, 14021), (4823, 6009)]