129151280

素因数分解:

$2^4\times 5^1\times {\mathrm{1614391}}^1$

素因数の和:1614404

約数の個数: 20

約数和(自身を含む): 300276912

約数和(自身を除く): 171125632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1614391, 3228782, 6457564, 8071955, 12915128, 16143910, 25830256, 32287820, 64575640, 129151280]

約数ペア:

[(1, 129151280), (2, 64575640), (4, 32287820), (5, 25830256), (8, 16143910), (10, 12915128), (16, 8071955), (20, 6457564), (40, 3228782), (80, 1614391)]