17918804985

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{391283}}^1$

素因数の和:391405

約数の個数: 32

約数和(自身を含む): 29750105088

約数和(自身を除く): 11831300103

約数列:

[1, 3, 5, 15, 43, 71, 129, 213, 215, 355, 645, 1065, 3053, 9159, 15265, 45795, 391283, 1173849, 1956415, 5869245, 16825169, 27781093, 50475507, 83343279, 84125845, 138905465, 252377535, 416716395, 1194586999, 3583760997, 5972934995, 17918804985]

約数ペア:

[(1, 17918804985), (3, 5972934995), (5, 3583760997), (15, 1194586999), (43, 416716395), (71, 252377535), (129, 138905465), (213, 84125845), (215, 83343279), (355, 50475507), (645, 27781093), (1065, 16825169), (3053, 5869245), (9159, 1956415), (15265, 1173849), (45795, 391283)]