21668218

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{317}}^1$

素因数の和:582

約数の個数: 32

約数和(自身を含む): 38465280

約数和(自身を除く): 16797062

約数列:

[1, 2, 11, 13, 22, 26, 143, 239, 286, 317, 478, 634, 2629, 3107, 3487, 4121, 5258, 6214, 6974, 8242, 34177, 45331, 68354, 75763, 90662, 151526, 833393, 984919, 1666786, 1969838, 10834109, 21668218]

約数ペア:

[(1, 21668218), (2, 10834109), (11, 1969838), (13, 1666786), (22, 984919), (26, 833393), (143, 151526), (239, 90662), (286, 75763), (317, 68354), (478, 45331), (634, 34177), (2629, 8242), (3107, 6974), (3487, 6214), (4121, 5258)]