21000901228

素因数分解:

$2^2\times {\mathrm{1051}}^1\times {\mathrm{4995457}}^1$

素因数の和:4996512

約数の個数: 12

約数和(自身を含む): 36786552712

約数和(自身を除く): 15785651484

約数列:

[1, 2, 4, 1051, 2102, 4204, 4995457, 9990914, 19981828, 5250225307, 10500450614, 21000901228]

約数ペア:

[(1, 21000901228), (2, 10500450614), (4, 5250225307), (1051, 19981828), (2102, 9990914), (4204, 4995457)]