28342587

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 51093504

約数和(自身を除く): 22750917

約数列:

[1, 3, 7, 13, 17, 21, 31, 39, 51, 91, 93, 119, 197, 217, 221, 273, 357, 403, 527, 591, 651, 663, 1209, 1379, 1547, 1581, 2561, 2821, 3349, 3689, 4137, 4641, 6107, 6851, 7683, 8463, 10047, 11067, 17927, 18321, 20553, 23443, 42749, 43537, 47957, 53781, 70329, 79391, 103819, 128247, 130611, 143871, 238173, 304759, 311457, 555737, 726733, 914277, 1349647, 1667211, 2180199, 4048941, 9447529, 28342587]

約数ペア:

[(1, 28342587), (3, 9447529), (7, 4048941), (13, 2180199), (17, 1667211), (21, 1349647), (31, 914277), (39, 726733), (51, 555737), (91, 311457), (93, 304759), (119, 238173), (197, 143871), (217, 130611), (221, 128247), (273, 103819), (357, 79391), (403, 70329), (527, 53781), (591, 47957), (651, 43537), (663, 42749), (1209, 23443), (1379, 20553), (1547, 18321), (1581, 17927), (2561, 11067), (2821, 10047), (3349, 8463), (3689, 7683), (4137, 6851), (4641, 6107)]