21556678

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3967}}^1$

素因数の和:4012

約数の個数: 32

約数和(自身を含む): 39997440

約数和(自身を除く): 18440762

約数列:

[1, 2, 11, 13, 19, 22, 26, 38, 143, 209, 247, 286, 418, 494, 2717, 3967, 5434, 7934, 43637, 51571, 75373, 87274, 103142, 150746, 567281, 829103, 979849, 1134562, 1658206, 1959698, 10778339, 21556678]

約数ペア:

[(1, 21556678), (2, 10778339), (11, 1959698), (13, 1658206), (19, 1134562), (22, 979849), (26, 829103), (38, 567281), (143, 150746), (209, 103142), (247, 87274), (286, 75373), (418, 51571), (494, 43637), (2717, 7934), (3967, 5434)]