20911291920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{251}}^2\times {\mathrm{461}}^1$

素因数の和:982

約数の個数: 180

約数和(自身を含む): 70660938348

約数和(自身を除く): 49749646428

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 251, 360, 461, 502, 720, 753, 922, 1004, 1255, 1383, 1506, 1844, 2008, 2259, 2305, 2510, 2766, 3012, 3688, 3765, 4016, 4149, 4518, 4610, 5020, 5532, 6024, 6915, 7376, 7530, 8298, 9036, 9220, 10040, 11064, 11295, 12048, 13830, 15060, 16596, 18072, 18440, 20080, 20745, 22128, 22590, 27660, 30120, 33192, 36144, 36880, 41490, 45180, 55320, 60240, 63001, 66384, 82980, 90360, 110640, 115711, 126002, 165960, 180720, 189003, 231422, 252004, 315005, 331920, 347133, 378006, 462844, 504008, 567009, 578555, 630010, 694266, 756012, 925688, 945015, 1008016, 1041399, 1134018, 1157110, 1260020, 1388532, 1512024, 1735665, 1851376, 1890030, 2082798, 2268036, 2314220, 2520040, 2777064, 2835045, 3024048, 3471330, 3780060, 4165596, 4536072, 4628440, 5040080, 5206995, 5554128, 5670090, 6942660, 7560120, 8331192, 9072144, 9256880, 10413990, 11340180, 13885320, 15120240, 16662384, 20827980, 22680360, 27770640, 29043461, 41655960, 45360720, 58086922, 83311920, 87130383, 116173844, 145217305, 174260766, 232347688, 261391149, 290434610, 348521532, 435651915, 464695376, 522782298, 580869220, 697043064, 871303830, 1045564596, 1161738440, 1306955745, 1394086128, 1742607660, 2091129192, 2323476880, 2613911490, 3485215320, 4182258384, 5227822980, 6970430640, 10455645960, 20911291920]

約数ペア:

[(1, 20911291920), (2, 10455645960), (3, 6970430640), (4, 5227822980), (5, 4182258384), (6, 3485215320), (8, 2613911490), (9, 2323476880), (10, 2091129192), (12, 1742607660), (15, 1394086128), (16, 1306955745), (18, 1161738440), (20, 1045564596), (24, 871303830), (30, 697043064), (36, 580869220), (40, 522782298), (45, 464695376), (48, 435651915), (60, 348521532), (72, 290434610), (80, 261391149), (90, 232347688), (120, 174260766), (144, 145217305), (180, 116173844), (240, 87130383), (251, 83311920), (360, 58086922), (461, 45360720), (502, 41655960), (720, 29043461), (753, 27770640), (922, 22680360), (1004, 20827980), (1255, 16662384), (1383, 15120240), (1506, 13885320), (1844, 11340180), (2008, 10413990), (2259, 9256880), (2305, 9072144), (2510, 8331192), (2766, 7560120), (3012, 6942660), (3688, 5670090), (3765, 5554128), (4016, 5206995), (4149, 5040080), (4518, 4628440), (4610, 4536072), (5020, 4165596), (5532, 3780060), (6024, 3471330), (6915, 3024048), (7376, 2835045), (7530, 2777064), (8298, 2520040), (9036, 2314220), (9220, 2268036), (10040, 2082798), (11064, 1890030), (11295, 1851376), (12048, 1735665), (13830, 1512024), (15060, 1388532), (16596, 1260020), (18072, 1157110), (18440, 1134018), (20080, 1041399), (20745, 1008016), (22128, 945015), (22590, 925688), (27660, 756012), (30120, 694266), (33192, 630010), (36144, 578555), (36880, 567009), (41490, 504008), (45180, 462844), (55320, 378006), (60240, 347133), (63001, 331920), (66384, 315005), (82980, 252004), (90360, 231422), (110640, 189003), (115711, 180720), (126002, 165960)]