31320471

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2441}}^1$

素因数の和:2511

約数の個数: 32

約数和(自身を含む): 52512768

約数和(自身を除く): 21192297

約数列:

[1, 3, 7, 13, 21, 39, 47, 91, 141, 273, 329, 611, 987, 1833, 2441, 4277, 7323, 12831, 17087, 31733, 51261, 95199, 114727, 222131, 344181, 666393, 803089, 1491451, 2409267, 4474353, 10440157, 31320471]

約数ペア:

[(1, 31320471), (3, 10440157), (7, 4474353), (13, 2409267), (21, 1491451), (39, 803089), (47, 666393), (91, 344181), (141, 222131), (273, 114727), (329, 95199), (611, 51261), (987, 31733), (1833, 17087), (2441, 12831), (4277, 7323)]