20172857680

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1019}}^1\times {\mathrm{1889}}^1$

素因数の和:3052

約数の個数: 80

約数和(自身を含む): 47331345600

約数和(自身を除く): 27158487920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1019, 1048, 1310, 1889, 2038, 2096, 2620, 3778, 4076, 5095, 5240, 7556, 8152, 9445, 10190, 10480, 15112, 16304, 18890, 20380, 30224, 37780, 40760, 75560, 81520, 133489, 151120, 247459, 266978, 494918, 533956, 667445, 989836, 1067912, 1237295, 1334890, 1924891, 1979672, 2135824, 2474590, 2669780, 3849782, 3959344, 4949180, 5339560, 7699564, 9624455, 9898360, 10679120, 15399128, 19248910, 19796720, 30798256, 38497820, 76995640, 153991280, 252160721, 504321442, 1008642884, 1260803605, 2017285768, 2521607210, 4034571536, 5043214420, 10086428840, 20172857680]

約数ペア:

[(1, 20172857680), (2, 10086428840), (4, 5043214420), (5, 4034571536), (8, 2521607210), (10, 2017285768), (16, 1260803605), (20, 1008642884), (40, 504321442), (80, 252160721), (131, 153991280), (262, 76995640), (524, 38497820), (655, 30798256), (1019, 19796720), (1048, 19248910), (1310, 15399128), (1889, 10679120), (2038, 9898360), (2096, 9624455), (2620, 7699564), (3778, 5339560), (4076, 4949180), (5095, 3959344), (5240, 3849782), (7556, 2669780), (8152, 2474590), (9445, 2135824), (10190, 1979672), (10480, 1924891), (15112, 1334890), (16304, 1237295), (18890, 1067912), (20380, 989836), (30224, 667445), (37780, 533956), (40760, 494918), (75560, 266978), (81520, 247459), (133489, 151120)]