129381880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{45557}}^1$

素因数の和:45639

約数の個数: 32

約数和(自身を含む): 295215840

約数和(自身を除く): 165833960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 45557, 91114, 182228, 227785, 364456, 455570, 911140, 1822280, 3234547, 6469094, 12938188, 16172735, 25876376, 32345470, 64690940, 129381880]

約数ペア:

[(1, 129381880), (2, 64690940), (4, 32345470), (5, 25876376), (8, 16172735), (10, 12938188), (20, 6469094), (40, 3234547), (71, 1822280), (142, 911140), (284, 455570), (355, 364456), (568, 227785), (710, 182228), (1420, 91114), (2840, 45557)]