20980148

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{8419}}^1$

素因数の和:8519

約数の個数: 24

約数和(自身を含む): 42436800

約数和(自身を除く): 21456652

約数列:

[1, 2, 4, 7, 14, 28, 89, 178, 356, 623, 1246, 2492, 8419, 16838, 33676, 58933, 117866, 235732, 749291, 1498582, 2997164, 5245037, 10490074, 20980148]

約数ペア:

[(1, 20980148), (2, 10490074), (4, 5245037), (7, 2997164), (14, 1498582), (28, 749291), (89, 235732), (178, 117866), (356, 58933), (623, 33676), (1246, 16838), (2492, 8419)]