261493960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{199}}^1$

素因数の和:268

約数の個数: 192

約数和(自身を含む): 768096000

約数和(自身を除く): 506602040

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 19, 20, 26, 28, 35, 38, 40, 52, 56, 65, 70, 76, 91, 95, 104, 130, 133, 140, 152, 182, 190, 199, 247, 260, 266, 280, 361, 364, 380, 398, 455, 494, 520, 532, 665, 722, 728, 760, 796, 910, 988, 995, 1064, 1235, 1330, 1393, 1444, 1592, 1729, 1805, 1820, 1976, 1990, 2470, 2527, 2587, 2660, 2786, 2888, 3458, 3610, 3640, 3781, 3980, 4693, 4940, 5054, 5174, 5320, 5572, 6916, 6965, 7220, 7562, 7960, 8645, 9386, 9880, 10108, 10348, 11144, 12635, 12935, 13832, 13930, 14440, 15124, 17290, 18109, 18772, 18905, 20216, 20696, 23465, 25270, 25870, 26467, 27860, 30248, 32851, 34580, 36218, 37544, 37810, 46930, 49153, 50540, 51740, 52934, 55720, 65702, 69160, 71839, 72436, 75620, 90545, 93860, 98306, 101080, 103480, 105868, 131404, 132335, 143678, 144872, 151240, 164255, 181090, 187720, 196612, 211736, 245765, 262808, 264670, 287356, 328510, 344071, 359195, 362180, 393224, 491530, 502873, 529340, 574712, 657020, 688142, 718390, 724360, 933907, 983060, 1005746, 1058680, 1314040, 1376284, 1436780, 1720355, 1867814, 1966120, 2011492, 2514365, 2752568, 2873560, 3440710, 3735628, 4022984, 4669535, 5028730, 6537349, 6881420, 7471256, 9339070, 10057460, 13074698, 13762840, 18678140, 20114920, 26149396, 32686745, 37356280, 52298792, 65373490, 130746980, 261493960]

約数ペア:

[(1, 261493960), (2, 130746980), (4, 65373490), (5, 52298792), (7, 37356280), (8, 32686745), (10, 26149396), (13, 20114920), (14, 18678140), (19, 13762840), (20, 13074698), (26, 10057460), (28, 9339070), (35, 7471256), (38, 6881420), (40, 6537349), (52, 5028730), (56, 4669535), (65, 4022984), (70, 3735628), (76, 3440710), (91, 2873560), (95, 2752568), (104, 2514365), (130, 2011492), (133, 1966120), (140, 1867814), (152, 1720355), (182, 1436780), (190, 1376284), (199, 1314040), (247, 1058680), (260, 1005746), (266, 983060), (280, 933907), (361, 724360), (364, 718390), (380, 688142), (398, 657020), (455, 574712), (494, 529340), (520, 502873), (532, 491530), (665, 393224), (722, 362180), (728, 359195), (760, 344071), (796, 328510), (910, 287356), (988, 264670), (995, 262808), (1064, 245765), (1235, 211736), (1330, 196612), (1393, 187720), (1444, 181090), (1592, 164255), (1729, 151240), (1805, 144872), (1820, 143678), (1976, 132335), (1990, 131404), (2470, 105868), (2527, 103480), (2587, 101080), (2660, 98306), (2786, 93860), (2888, 90545), (3458, 75620), (3610, 72436), (3640, 71839), (3781, 69160), (3980, 65702), (4693, 55720), (4940, 52934), (5054, 51740), (5174, 50540), (5320, 49153), (5572, 46930), (6916, 37810), (6965, 37544), (7220, 36218), (7562, 34580), (7960, 32851), (8645, 30248), (9386, 27860), (9880, 26467), (10108, 25870), (10348, 25270), (11144, 23465), (12635, 20696), (12935, 20216), (13832, 18905), (13930, 18772), (14440, 18109), (15124, 17290)]