64505840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{907}}^1$

素因数の和:1054

約数の個数: 80

約数和(自身を含む): 172941312

約数和(自身を除く): 108435472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 127, 140, 254, 280, 508, 560, 635, 889, 907, 1016, 1270, 1778, 1814, 2032, 2540, 3556, 3628, 4445, 4535, 5080, 6349, 7112, 7256, 8890, 9070, 10160, 12698, 14224, 14512, 17780, 18140, 25396, 31745, 35560, 36280, 50792, 63490, 71120, 72560, 101584, 115189, 126980, 230378, 253960, 460756, 507920, 575945, 806323, 921512, 1151890, 1612646, 1843024, 2303780, 3225292, 4031615, 4607560, 6450584, 8063230, 9215120, 12901168, 16126460, 32252920, 64505840]

約数ペア:

[(1, 64505840), (2, 32252920), (4, 16126460), (5, 12901168), (7, 9215120), (8, 8063230), (10, 6450584), (14, 4607560), (16, 4031615), (20, 3225292), (28, 2303780), (35, 1843024), (40, 1612646), (56, 1151890), (70, 921512), (80, 806323), (112, 575945), (127, 507920), (140, 460756), (254, 253960), (280, 230378), (508, 126980), (560, 115189), (635, 101584), (889, 72560), (907, 71120), (1016, 63490), (1270, 50792), (1778, 36280), (1814, 35560), (2032, 31745), (2540, 25396), (3556, 18140), (3628, 17780), (4445, 14512), (4535, 14224), (5080, 12698), (6349, 10160), (7112, 9070), (7256, 8890)]