28007007

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4129}}^1$

素因数の和:4175

約数の個数: 32

約数和(自身を含む): 47577600

約数和(自身を除く): 19570593

約数列:

[1, 3, 7, 17, 19, 21, 51, 57, 119, 133, 323, 357, 399, 969, 2261, 4129, 6783, 12387, 28903, 70193, 78451, 86709, 210579, 235353, 491351, 549157, 1333667, 1474053, 1647471, 4001001, 9335669, 28007007]

約数ペア:

[(1, 28007007), (3, 9335669), (7, 4001001), (17, 1647471), (19, 1474053), (21, 1333667), (51, 549157), (57, 491351), (119, 235353), (133, 210579), (323, 86709), (357, 78451), (399, 70193), (969, 28903), (2261, 12387), (4129, 6783)]