640641778

素因数分解:

$2^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{152027}}^1$

素因数の和:152086

約数の個数: 24

約数和(自身を含む): 1143858672

約数和(自身を除く): 503216894

約数列:

[1, 2, 7, 14, 43, 49, 86, 98, 301, 602, 2107, 4214, 152027, 304054, 1064189, 2128378, 6537161, 7449323, 13074322, 14898646, 45760127, 91520254, 320320889, 640641778]

約数ペア:

[(1, 640641778), (2, 320320889), (7, 91520254), (14, 45760127), (43, 14898646), (49, 13074322), (86, 7449323), (98, 6537161), (301, 2128378), (602, 1064189), (2107, 304054), (4214, 152027)]