128260912

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{616639}}^1$

素因数の和:616660

約数の個数: 20

約数和(自身を含む): 267621760

約数和(自身を除く): 139360848

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 616639, 1233278, 2466556, 4933112, 8016307, 9866224, 16032614, 32065228, 64130456, 128260912]

約数ペア:

[(1, 128260912), (2, 64130456), (4, 32065228), (8, 16032614), (13, 9866224), (16, 8016307), (26, 4933112), (52, 2466556), (104, 1233278), (208, 616639)]