28657013

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{673}}^1$

素因数の和:777

約数の個数: 24

約数和(自身を含む): 36881280

約数和(自身を除く): 8224267

約数列:

[1, 7, 11, 49, 77, 79, 539, 553, 673, 869, 3871, 4711, 6083, 7403, 32977, 42581, 51821, 53167, 362747, 372169, 584837, 2605183, 4093859, 28657013]

約数ペア:

[(1, 28657013), (7, 4093859), (11, 2605183), (49, 584837), (77, 372169), (79, 362747), (539, 53167), (553, 51821), (673, 42581), (869, 32977), (3871, 7403), (4711, 6083)]