21199891433

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{661}}^1\times {\mathrm{839}}^1$

素因数の和:1677

約数の個数: 32

約数和(自身を含む): 25054740480

約数和(自身を除く): 3854849047

約数列:

[1, 7, 43, 127, 301, 661, 839, 889, 4627, 5461, 5873, 28423, 36077, 38227, 83947, 106553, 198961, 252539, 554579, 587629, 745871, 3609721, 3882053, 4581779, 23846897, 25268047, 32072453, 70431533, 166928279, 493020731, 3028555919, 21199891433]

約数ペア:

[(1, 21199891433), (7, 3028555919), (43, 493020731), (127, 166928279), (301, 70431533), (661, 32072453), (839, 25268047), (889, 23846897), (4627, 4581779), (5461, 3882053), (5873, 3609721), (28423, 745871), (36077, 587629), (38227, 554579), (83947, 252539), (106553, 198961)]