78961880

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{433}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 183738240

約数和(自身を除く): 104776360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 97, 188, 194, 235, 376, 388, 433, 470, 485, 776, 866, 940, 970, 1732, 1880, 1940, 2165, 3464, 3880, 4330, 4559, 8660, 9118, 17320, 18236, 20351, 22795, 36472, 40702, 42001, 45590, 81404, 84002, 91180, 101755, 162808, 168004, 182360, 203510, 210005, 336008, 407020, 420010, 814040, 840020, 1680040, 1974047, 3948094, 7896188, 9870235, 15792376, 19740470, 39480940, 78961880]

約数ペア:

[(1, 78961880), (2, 39480940), (4, 19740470), (5, 15792376), (8, 9870235), (10, 7896188), (20, 3948094), (40, 1974047), (47, 1680040), (94, 840020), (97, 814040), (188, 420010), (194, 407020), (235, 336008), (376, 210005), (388, 203510), (433, 182360), (470, 168004), (485, 162808), (776, 101755), (866, 91180), (940, 84002), (970, 81404), (1732, 45590), (1880, 42001), (1940, 40702), (2165, 36472), (3464, 22795), (3880, 20351), (4330, 18236), (4559, 17320), (8660, 9118)]