21997105

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{5051}}^1$

素因数の和:5136

約数の個数: 16

約数和(自身を含む): 28857024

約数和(自身を除く): 6859919

約数列:

[1, 5, 13, 65, 67, 335, 871, 4355, 5051, 25255, 65663, 328315, 338417, 1692085, 4399421, 21997105]

約数ペア:

[(1, 21997105), (5, 4399421), (13, 1692085), (65, 338417), (67, 328315), (335, 65663), (871, 25255), (4355, 5051)]