20607880

素因数分解:

$2^3\times 5^1\times {\mathrm{677}}^1\times {\mathrm{761}}^1$

素因数の和:1449

約数の個数: 32

約数和(自身を含む): 46497240

約数和(自身を除く): 25889360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 677, 761, 1354, 1522, 2708, 3044, 3385, 3805, 5416, 6088, 6770, 7610, 13540, 15220, 27080, 30440, 515197, 1030394, 2060788, 2575985, 4121576, 5151970, 10303940, 20607880]

約数ペア:

[(1, 20607880), (2, 10303940), (4, 5151970), (5, 4121576), (8, 2575985), (10, 2060788), (20, 1030394), (40, 515197), (677, 30440), (761, 27080), (1354, 15220), (1522, 13540), (2708, 7610), (3044, 6770), (3385, 6088), (3805, 5416)]