20114920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{199}}^1$

素因数の和:255

約数の個数: 96

約数和(自身を含む): 54864000

約数和(自身を除く): 34749080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 199, 266, 280, 361, 380, 398, 532, 665, 722, 760, 796, 995, 1064, 1330, 1393, 1444, 1592, 1805, 1990, 2527, 2660, 2786, 2888, 3610, 3781, 3980, 5054, 5320, 5572, 6965, 7220, 7562, 7960, 10108, 11144, 12635, 13930, 14440, 15124, 18905, 20216, 25270, 26467, 27860, 30248, 37810, 50540, 52934, 55720, 71839, 75620, 101080, 105868, 132335, 143678, 151240, 211736, 264670, 287356, 359195, 502873, 529340, 574712, 718390, 1005746, 1058680, 1436780, 2011492, 2514365, 2873560, 4022984, 5028730, 10057460, 20114920]

約数ペア:

[(1, 20114920), (2, 10057460), (4, 5028730), (5, 4022984), (7, 2873560), (8, 2514365), (10, 2011492), (14, 1436780), (19, 1058680), (20, 1005746), (28, 718390), (35, 574712), (38, 529340), (40, 502873), (56, 359195), (70, 287356), (76, 264670), (95, 211736), (133, 151240), (140, 143678), (152, 132335), (190, 105868), (199, 101080), (266, 75620), (280, 71839), (361, 55720), (380, 52934), (398, 50540), (532, 37810), (665, 30248), (722, 27860), (760, 26467), (796, 25270), (995, 20216), (1064, 18905), (1330, 15124), (1393, 14440), (1444, 13930), (1592, 12635), (1805, 11144), (1990, 10108), (2527, 7960), (2660, 7562), (2786, 7220), (2888, 6965), (3610, 5572), (3781, 5320), (3980, 5054)]