128709620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{495037}}^1$

素因数の和:495059

約数の個数: 24

約数和(自身を含む): 291082344

約数和(自身を除く): 162372724

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 495037, 990074, 1980148, 2475185, 4950370, 6435481, 9900740, 12870962, 25741924, 32177405, 64354810, 128709620]

約数ペア:

[(1, 128709620), (2, 64354810), (4, 32177405), (5, 25741924), (10, 12870962), (13, 9900740), (20, 6435481), (26, 4950370), (52, 2475185), (65, 1980148), (130, 990074), (260, 495037)]