81500880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{293}}^1$

素因数の和:389

約数の個数: 160

約数和(自身を含む): 271232640

約数和(自身を除く): 189731760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 61, 76, 80, 95, 114, 120, 122, 152, 183, 190, 228, 240, 244, 285, 293, 304, 305, 366, 380, 456, 488, 570, 586, 610, 732, 760, 879, 912, 915, 976, 1140, 1159, 1172, 1220, 1464, 1465, 1520, 1758, 1830, 2280, 2318, 2344, 2440, 2928, 2930, 3477, 3516, 3660, 4395, 4560, 4636, 4688, 4880, 5567, 5795, 5860, 6954, 7032, 7320, 8790, 9272, 11134, 11590, 11720, 13908, 14064, 14640, 16701, 17385, 17580, 17873, 18544, 22268, 23180, 23440, 27816, 27835, 33402, 34770, 35160, 35746, 44536, 46360, 53619, 55632, 55670, 66804, 69540, 70320, 71492, 83505, 89072, 89365, 92720, 107238, 111340, 133608, 139080, 142984, 167010, 178730, 214476, 222680, 267216, 268095, 278160, 285968, 334020, 339587, 357460, 428952, 445360, 536190, 668040, 679174, 714920, 857904, 1018761, 1072380, 1336080, 1358348, 1429840, 1697935, 2037522, 2144760, 2716696, 3395870, 4075044, 4289520, 5093805, 5433392, 6791740, 8150088, 10187610, 13583480, 16300176, 20375220, 27166960, 40750440, 81500880]

約数ペア:

[(1, 81500880), (2, 40750440), (3, 27166960), (4, 20375220), (5, 16300176), (6, 13583480), (8, 10187610), (10, 8150088), (12, 6791740), (15, 5433392), (16, 5093805), (19, 4289520), (20, 4075044), (24, 3395870), (30, 2716696), (38, 2144760), (40, 2037522), (48, 1697935), (57, 1429840), (60, 1358348), (61, 1336080), (76, 1072380), (80, 1018761), (95, 857904), (114, 714920), (120, 679174), (122, 668040), (152, 536190), (183, 445360), (190, 428952), (228, 357460), (240, 339587), (244, 334020), (285, 285968), (293, 278160), (304, 268095), (305, 267216), (366, 222680), (380, 214476), (456, 178730), (488, 167010), (570, 142984), (586, 139080), (610, 133608), (732, 111340), (760, 107238), (879, 92720), (912, 89365), (915, 89072), (976, 83505), (1140, 71492), (1159, 70320), (1172, 69540), (1220, 66804), (1464, 55670), (1465, 55632), (1520, 53619), (1758, 46360), (1830, 44536), (2280, 35746), (2318, 35160), (2344, 34770), (2440, 33402), (2928, 27835), (2930, 27816), (3477, 23440), (3516, 23180), (3660, 22268), (4395, 18544), (4560, 17873), (4636, 17580), (4688, 17385), (4880, 16701), (5567, 14640), (5795, 14064), (5860, 13908), (6954, 11720), (7032, 11590), (7320, 11134), (8790, 9272)]