639734211

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{491}}^1\times {\mathrm{2039}}^1$

素因数の和:2607

約数の個数: 24

約数和(自身を含む): 939444480

約数和(自身を除く): 299710269

約数列:

[1, 3, 9, 71, 213, 491, 639, 1473, 2039, 4419, 6117, 18351, 34861, 104583, 144769, 313749, 434307, 1001149, 1302921, 3003447, 9010341, 71081579, 213244737, 639734211]

約数ペア:

[(1, 639734211), (3, 213244737), (9, 71081579), (71, 9010341), (213, 3003447), (491, 1302921), (639, 1001149), (1473, 434307), (2039, 313749), (4419, 144769), (6117, 104583), (18351, 34861)]