20308890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{997}}^1$

素因数の和:1111

約数の個数: 64

約数和(自身を含む): 56335104

約数和(自身を除く): 36026214

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 97, 105, 194, 210, 291, 485, 582, 679, 970, 997, 1358, 1455, 1994, 2037, 2910, 2991, 3395, 4074, 4985, 5982, 6790, 6979, 9970, 10185, 13958, 14955, 20370, 20937, 29910, 34895, 41874, 69790, 96709, 104685, 193418, 209370, 290127, 483545, 580254, 676963, 967090, 1353926, 1450635, 2030889, 2901270, 3384815, 4061778, 6769630, 10154445, 20308890]

約数ペア:

[(1, 20308890), (2, 10154445), (3, 6769630), (5, 4061778), (6, 3384815), (7, 2901270), (10, 2030889), (14, 1450635), (15, 1353926), (21, 967090), (30, 676963), (35, 580254), (42, 483545), (70, 290127), (97, 209370), (105, 193418), (194, 104685), (210, 96709), (291, 69790), (485, 41874), (582, 34895), (679, 29910), (970, 20937), (997, 20370), (1358, 14955), (1455, 13958), (1994, 10185), (2037, 9970), (2910, 6979), (2991, 6790), (3395, 5982), (4074, 4985)]