640151120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{9001}}^1$

素因数の和:9148

約数の個数: 80

約数和(自身を含む): 1714556928

約数和(自身を除く): 1074405808

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, 1016, 1270, 1778, 2032, 2540, 3556, 4445, 5080, 7112, 8890, 9001, 10160, 14224, 17780, 18002, 35560, 36004, 45005, 63007, 71120, 72008, 90010, 126014, 144016, 180020, 252028, 315035, 360040, 504056, 630070, 720080, 1008112, 1143127, 1260140, 2286254, 2520280, 4572508, 5040560, 5715635, 8001889, 9145016, 11431270, 16003778, 18290032, 22862540, 32007556, 40009445, 45725080, 64015112, 80018890, 91450160, 128030224, 160037780, 320075560, 640151120]

約数ペア:

[(1, 640151120), (2, 320075560), (4, 160037780), (5, 128030224), (7, 91450160), (8, 80018890), (10, 64015112), (14, 45725080), (16, 40009445), (20, 32007556), (28, 22862540), (35, 18290032), (40, 16003778), (56, 11431270), (70, 9145016), (80, 8001889), (112, 5715635), (127, 5040560), (140, 4572508), (254, 2520280), (280, 2286254), (508, 1260140), (560, 1143127), (635, 1008112), (889, 720080), (1016, 630070), (1270, 504056), (1778, 360040), (2032, 315035), (2540, 252028), (3556, 180020), (4445, 144016), (5080, 126014), (7112, 90010), (8890, 72008), (9001, 71120), (10160, 63007), (14224, 45005), (17780, 36004), (18002, 35560)]