257679897

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{193}}^1\times {\mathrm{557}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 374118912

約数和(自身を除く): 116439015

約数列:

[1, 3, 17, 47, 51, 141, 193, 557, 579, 799, 1671, 2397, 3281, 9071, 9469, 9843, 26179, 27213, 28407, 78537, 107501, 154207, 322503, 445043, 462621, 1335129, 1827517, 5052547, 5482551, 15157641, 85893299, 257679897]

約数ペア:

[(1, 257679897), (3, 85893299), (17, 15157641), (47, 5482551), (51, 5052547), (141, 1827517), (193, 1335129), (557, 462621), (579, 445043), (799, 322503), (1671, 154207), (2397, 107501), (3281, 78537), (9071, 28407), (9469, 27213), (9843, 26179)]