20805989974

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^2\times {\mathrm{173}}^1$

素因数の和:470

約数の個数: 96

約数和(自身を含む): 40018841856

約数和(自身を除く): 19212851882

約数列:

[1, 2, 7, 11, 14, 22, 77, 83, 97, 154, 166, 173, 194, 346, 581, 679, 913, 1067, 1162, 1211, 1358, 1826, 1903, 2134, 2422, 3806, 6391, 7469, 8051, 9409, 12782, 13321, 14359, 14938, 16102, 16781, 18818, 26642, 28718, 33562, 56357, 65863, 88561, 100513, 103499, 112714, 117467, 131726, 157949, 177122, 184591, 201026, 206998, 234934, 315898, 369182, 619927, 724493, 780947, 1105643, 1239854, 1292137, 1392823, 1448986, 1561894, 1627757, 2211286, 2584274, 2785646, 3255514, 5466629, 8590417, 9749761, 10933258, 11394299, 15321053, 17180834, 17905327, 19499522, 22788598, 30642106, 35810654, 60132919, 107247371, 120265838, 125337289, 135103831, 214494742, 250674578, 270207662, 945726817, 1486142141, 1891453634, 2972284282, 10402994987, 20805989974]

約数ペア:

[(1, 20805989974), (2, 10402994987), (7, 2972284282), (11, 1891453634), (14, 1486142141), (22, 945726817), (77, 270207662), (83, 250674578), (97, 214494742), (154, 135103831), (166, 125337289), (173, 120265838), (194, 107247371), (346, 60132919), (581, 35810654), (679, 30642106), (913, 22788598), (1067, 19499522), (1162, 17905327), (1211, 17180834), (1358, 15321053), (1826, 11394299), (1903, 10933258), (2134, 9749761), (2422, 8590417), (3806, 5466629), (6391, 3255514), (7469, 2785646), (8051, 2584274), (9409, 2211286), (12782, 1627757), (13321, 1561894), (14359, 1448986), (14938, 1392823), (16102, 1292137), (16781, 1239854), (18818, 1105643), (26642, 780947), (28718, 724493), (33562, 619927), (56357, 369182), (65863, 315898), (88561, 234934), (100513, 206998), (103499, 201026), (112714, 184591), (117467, 177122), (131726, 157949)]