8015720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 19440000

約数和(自身を除く): 11424280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 53, 76, 95, 106, 152, 190, 199, 212, 265, 380, 398, 424, 530, 760, 796, 995, 1007, 1060, 1592, 1990, 2014, 2120, 3781, 3980, 4028, 5035, 7562, 7960, 8056, 10070, 10547, 15124, 18905, 20140, 21094, 30248, 37810, 40280, 42188, 52735, 75620, 84376, 105470, 151240, 200393, 210940, 400786, 421880, 801572, 1001965, 1603144, 2003930, 4007860, 8015720]

約数ペア:

[(1, 8015720), (2, 4007860), (4, 2003930), (5, 1603144), (8, 1001965), (10, 801572), (19, 421880), (20, 400786), (38, 210940), (40, 200393), (53, 151240), (76, 105470), (95, 84376), (106, 75620), (152, 52735), (190, 42188), (199, 40280), (212, 37810), (265, 30248), (380, 21094), (398, 20140), (424, 18905), (530, 15124), (760, 10547), (796, 10070), (995, 8056), (1007, 7960), (1060, 7562), (1592, 5035), (1990, 4028), (2014, 3980), (2120, 3781)]