641691

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:131

約数の個数: 24

約数和(自身を含む): 995904

約数和(自身を除く): 354213

約数列:

[1, 3, 9, 37, 41, 47, 111, 123, 141, 333, 369, 423, 1517, 1739, 1927, 4551, 5217, 5781, 13653, 15651, 17343, 71299, 213897, 641691]

約数ペア:

[(1, 641691), (3, 213897), (9, 71299), (37, 17343), (41, 15651), (47, 13653), (111, 5781), (123, 5217), (141, 4551), (333, 1927), (369, 1739), (423, 1517)]