20689860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18149}}^1$

素因数の和:18180

約数の個数: 48

約数和(自身を含む): 60984000

約数和(自身を除く): 40294140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 18149, 36298, 54447, 72596, 90745, 108894, 181490, 217788, 272235, 344831, 362980, 544470, 689662, 1034493, 1088940, 1379324, 1724155, 2068986, 3448310, 4137972, 5172465, 6896620, 10344930, 20689860]

約数ペア:

[(1, 20689860), (2, 10344930), (3, 6896620), (4, 5172465), (5, 4137972), (6, 3448310), (10, 2068986), (12, 1724155), (15, 1379324), (19, 1088940), (20, 1034493), (30, 689662), (38, 544470), (57, 362980), (60, 344831), (76, 272235), (95, 217788), (114, 181490), (190, 108894), (228, 90745), (285, 72596), (380, 54447), (570, 36298), (1140, 18149)]