20954360

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10691}}^1$

素因数の和:10716

約数の個数: 48

約数和(自身を含む): 54849960

約数和(自身を除く): 33895600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10691, 21382, 42764, 53455, 74837, 85528, 106910, 149674, 213820, 299348, 374185, 427640, 523859, 598696, 748370, 1047718, 1496740, 2095436, 2619295, 2993480, 4190872, 5238590, 10477180, 20954360]

約数ペア:

[(1, 20954360), (2, 10477180), (4, 5238590), (5, 4190872), (7, 2993480), (8, 2619295), (10, 2095436), (14, 1496740), (20, 1047718), (28, 748370), (35, 598696), (40, 523859), (49, 427640), (56, 374185), (70, 299348), (98, 213820), (140, 149674), (196, 106910), (245, 85528), (280, 74837), (392, 53455), (490, 42764), (980, 21382), (1960, 10691)]