1981866620

素因数分解:

$2^2\times 5^1\times {\mathrm{2389}}^1\times {\mathrm{41479}}^1$

素因数の和:43877

約数の個数: 24

約数和(自身を含む): 4163762400

約数和(自身を除く): 2181895780

約数列:

[1, 2, 4, 5, 10, 20, 2389, 4778, 9556, 11945, 23890, 41479, 47780, 82958, 165916, 207395, 414790, 829580, 99093331, 198186662, 396373324, 495466655, 990933310, 1981866620]

約数ペア:

[(1, 1981866620), (2, 990933310), (4, 495466655), (5, 396373324), (10, 198186662), (20, 99093331), (2389, 829580), (4778, 414790), (9556, 207395), (11945, 165916), (23890, 82958), (41479, 47780)]