20343820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20759}}^1$

素因数の和:20782

約数の個数: 36

約数和(自身を含む): 49699440

約数和(自身を除く): 29355620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20759, 41518, 83036, 103795, 145313, 207590, 290626, 415180, 581252, 726565, 1017191, 1453130, 2034382, 2906260, 4068764, 5085955, 10171910, 20343820]

約数ペア:

[(1, 20343820), (2, 10171910), (4, 5085955), (5, 4068764), (7, 2906260), (10, 2034382), (14, 1453130), (20, 1017191), (28, 726565), (35, 581252), (49, 415180), (70, 290626), (98, 207590), (140, 145313), (196, 103795), (245, 83036), (490, 41518), (980, 20759)]