12881421

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4987}}^1$

素因数の和:5041

約数の個数: 24

約数和(自身を含む): 21787584

約数和(自身を除く): 8906163

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 4987, 14961, 34909, 44883, 104727, 204467, 314181, 613401, 1431269, 1840203, 4293807, 12881421]

約数ペア:

[(1, 12881421), (3, 4293807), (7, 1840203), (9, 1431269), (21, 613401), (41, 314181), (63, 204467), (123, 104727), (287, 44883), (369, 34909), (861, 14961), (2583, 4987)]