20045998

素因数分解:

$2^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:197

約数の個数: 48

約数和(自身を含む): 36837504

約数和(自身を除く): 16791506

約数列:

[1, 2, 7, 14, 43, 49, 67, 71, 86, 98, 134, 142, 301, 469, 497, 602, 938, 994, 2107, 2881, 3053, 3283, 3479, 4214, 4757, 5762, 6106, 6566, 6958, 9514, 20167, 21371, 33299, 40334, 42742, 66598, 141169, 149597, 204551, 233093, 282338, 299194, 409102, 466186, 1431857, 2863714, 10022999, 20045998]

約数ペア:

[(1, 20045998), (2, 10022999), (7, 2863714), (14, 1431857), (43, 466186), (49, 409102), (67, 299194), (71, 282338), (86, 233093), (98, 204551), (134, 149597), (142, 141169), (301, 66598), (469, 42742), (497, 40334), (602, 33299), (938, 21371), (994, 20167), (2107, 9514), (2881, 6958), (3053, 6566), (3283, 6106), (3479, 5762), (4214, 4757)]