90207985

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1171}}^1$

素因数の和:1285

約数の個数: 32

約数和(自身を含む): 129613824

約数和(自身を除く): 39405839

約数列:

[1, 5, 7, 31, 35, 71, 155, 217, 355, 497, 1085, 1171, 2201, 2485, 5855, 8197, 11005, 15407, 36301, 40985, 77035, 83141, 181505, 254107, 415705, 581987, 1270535, 2577371, 2909935, 12886855, 18041597, 90207985]

約数ペア:

[(1, 90207985), (5, 18041597), (7, 12886855), (31, 2909935), (35, 2577371), (71, 1270535), (155, 581987), (217, 415705), (355, 254107), (497, 181505), (1085, 83141), (1171, 77035), (2201, 40985), (2485, 36301), (5855, 15407), (8197, 11005)]