643922785

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1\times {\mathrm{613}}^1$

素因数の和:969

約数の個数: 32

約数和(自身を含む): 859403520

約数和(自身を除く): 215480735

約数列:

[1, 5, 11, 55, 71, 269, 355, 613, 781, 1345, 2959, 3065, 3905, 6743, 14795, 19099, 33715, 43523, 95495, 164897, 210089, 217615, 478753, 824485, 1050445, 1813867, 2393765, 9069335, 11707687, 58538435, 128784557, 643922785]

約数ペア:

[(1, 643922785), (5, 128784557), (11, 58538435), (55, 11707687), (71, 9069335), (269, 2393765), (355, 1813867), (613, 1050445), (781, 824485), (1345, 478753), (2959, 217615), (3065, 210089), (3905, 164897), (6743, 95495), (14795, 43523), (19099, 33715)]