20164557520

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1\times {\mathrm{9767}}^1$

素因数の和:10108

約数の個数: 80

約数和(自身を含む): 47485139328

約数和(自身を除く): 27320581808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 197, 262, 394, 524, 655, 788, 985, 1048, 1310, 1576, 1970, 2096, 2620, 3152, 3940, 5240, 7880, 9767, 10480, 15760, 19534, 25807, 39068, 48835, 51614, 78136, 97670, 103228, 129035, 156272, 195340, 206456, 258070, 390680, 412912, 516140, 781360, 1032280, 1279477, 1924099, 2064560, 2558954, 3848198, 5117908, 6397385, 7696396, 9620495, 10235816, 12794770, 15392792, 19240990, 20471632, 25589540, 30785584, 38481980, 51179080, 76963960, 102358160, 153927920, 252056969, 504113938, 1008227876, 1260284845, 2016455752, 2520569690, 4032911504, 5041139380, 10082278760, 20164557520]

約数ペア:

[(1, 20164557520), (2, 10082278760), (4, 5041139380), (5, 4032911504), (8, 2520569690), (10, 2016455752), (16, 1260284845), (20, 1008227876), (40, 504113938), (80, 252056969), (131, 153927920), (197, 102358160), (262, 76963960), (394, 51179080), (524, 38481980), (655, 30785584), (788, 25589540), (985, 20471632), (1048, 19240990), (1310, 15392792), (1576, 12794770), (1970, 10235816), (2096, 9620495), (2620, 7696396), (3152, 6397385), (3940, 5117908), (5240, 3848198), (7880, 2558954), (9767, 2064560), (10480, 1924099), (15760, 1279477), (19534, 1032280), (25807, 781360), (39068, 516140), (48835, 412912), (51614, 390680), (78136, 258070), (97670, 206456), (103228, 195340), (129035, 156272)]