129807280

素因数分解:

$2^4\times 5^1\times {\mathrm{1622591}}^1$

素因数の和:1622604

約数の個数: 20

約数和(自身を含む): 301802112

約数和(自身を除く): 171994832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1622591, 3245182, 6490364, 8112955, 12980728, 16225910, 25961456, 32451820, 64903640, 129807280]

約数ペア:

[(1, 129807280), (2, 64903640), (4, 32451820), (5, 25961456), (8, 16225910), (10, 12980728), (16, 8112955), (20, 6490364), (40, 3245182), (80, 1622591)]