66682928

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{320591}}^1$

素因数の和:320612

約数の個数: 20

約数和(自身を含む): 139136928

約数和(自身を除く): 72454000

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 320591, 641182, 1282364, 2564728, 4167683, 5129456, 8335366, 16670732, 33341464, 66682928]

約数ペア:

[(1, 66682928), (2, 33341464), (4, 16670732), (8, 8335366), (13, 5129456), (16, 4167683), (26, 2564728), (52, 1282364), (104, 641182), (208, 320591)]