19902044

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1999}}^1$

素因数の和:2153

約数の個数: 24

約数和(自身を含む): 36960000

約数和(自身を除く): 17057956

約数列:

[1, 2, 4, 19, 38, 76, 131, 262, 524, 1999, 2489, 3998, 4978, 7996, 9956, 37981, 75962, 151924, 261869, 523738, 1047476, 4975511, 9951022, 19902044]

約数ペア:

[(1, 19902044), (2, 9951022), (4, 4975511), (19, 1047476), (38, 523738), (76, 261869), (131, 151924), (262, 75962), (524, 37981), (1999, 9956), (2489, 7996), (3998, 4978)]