20668856

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{563}}^1$

素因数の和:935

約数の個数: 32

約数和(自身を含む): 41927760

約数和(自身を除く): 21258904

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 353, 563, 706, 1126, 1412, 2252, 2824, 4504, 4589, 7319, 9178, 14638, 18356, 29276, 36712, 58552, 198739, 397478, 794956, 1589912, 2583607, 5167214, 10334428, 20668856]

約数ペア:

[(1, 20668856), (2, 10334428), (4, 5167214), (8, 2583607), (13, 1589912), (26, 794956), (52, 397478), (104, 198739), (353, 58552), (563, 36712), (706, 29276), (1126, 18356), (1412, 14638), (2252, 9178), (2824, 7319), (4504, 4589)]