320400080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4001}}^1$

素因数の和:4045

約数の個数: 160

約数和(自身を含む): 1000435968

約数和(自身を除く): 680035888

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 80, 88, 91, 104, 110, 112, 130, 140, 143, 154, 176, 182, 208, 220, 260, 280, 286, 308, 364, 385, 440, 455, 520, 560, 572, 616, 715, 728, 770, 880, 910, 1001, 1040, 1144, 1232, 1430, 1456, 1540, 1820, 2002, 2288, 2860, 3080, 3640, 4001, 4004, 5005, 5720, 6160, 7280, 8002, 8008, 10010, 11440, 16004, 16016, 20005, 20020, 28007, 32008, 40010, 40040, 44011, 52013, 56014, 64016, 80020, 80080, 88022, 104026, 112028, 140035, 160040, 176044, 208052, 220055, 224056, 260065, 280070, 308077, 320080, 352088, 364091, 416104, 440110, 448112, 520130, 560140, 572143, 616154, 704176, 728182, 832208, 880220, 1040260, 1120280, 1144286, 1232308, 1456364, 1540385, 1760440, 1820455, 2080520, 2240560, 2288572, 2464616, 2860715, 2912728, 3080770, 3520880, 3640910, 4005001, 4161040, 4577144, 4929232, 5721430, 5825456, 6161540, 7281820, 8010002, 9154288, 11442860, 12323080, 14563640, 16020004, 20025005, 22885720, 24646160, 29127280, 32040008, 40050010, 45771440, 64080016, 80100020, 160200040, 320400080]

約数ペア:

[(1, 320400080), (2, 160200040), (4, 80100020), (5, 64080016), (7, 45771440), (8, 40050010), (10, 32040008), (11, 29127280), (13, 24646160), (14, 22885720), (16, 20025005), (20, 16020004), (22, 14563640), (26, 12323080), (28, 11442860), (35, 9154288), (40, 8010002), (44, 7281820), (52, 6161540), (55, 5825456), (56, 5721430), (65, 4929232), (70, 4577144), (77, 4161040), (80, 4005001), (88, 3640910), (91, 3520880), (104, 3080770), (110, 2912728), (112, 2860715), (130, 2464616), (140, 2288572), (143, 2240560), (154, 2080520), (176, 1820455), (182, 1760440), (208, 1540385), (220, 1456364), (260, 1232308), (280, 1144286), (286, 1120280), (308, 1040260), (364, 880220), (385, 832208), (440, 728182), (455, 704176), (520, 616154), (560, 572143), (572, 560140), (616, 520130), (715, 448112), (728, 440110), (770, 416104), (880, 364091), (910, 352088), (1001, 320080), (1040, 308077), (1144, 280070), (1232, 260065), (1430, 224056), (1456, 220055), (1540, 208052), (1820, 176044), (2002, 160040), (2288, 140035), (2860, 112028), (3080, 104026), (3640, 88022), (4001, 80080), (4004, 80020), (5005, 64016), (5720, 56014), (6160, 52013), (7280, 44011), (8002, 40040), (8008, 40010), (10010, 32008), (11440, 28007), (16004, 20020), (16016, 20005)]