644889280

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:343

約数の個数: 224

約数和(自身を含む): 1868009472

約数和(自身を除く): 1223120192

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 37, 40, 56, 62, 64, 70, 74, 80, 112, 124, 140, 148, 155, 160, 185, 217, 224, 248, 251, 259, 280, 296, 310, 320, 370, 434, 448, 496, 502, 518, 560, 592, 620, 740, 868, 992, 1004, 1036, 1085, 1120, 1147, 1184, 1240, 1255, 1295, 1480, 1736, 1757, 1984, 2008, 2072, 2170, 2240, 2294, 2368, 2480, 2510, 2590, 2960, 3472, 3514, 4016, 4144, 4340, 4588, 4960, 5020, 5180, 5735, 5920, 6944, 7028, 7781, 8029, 8032, 8288, 8680, 8785, 9176, 9287, 9920, 10040, 10360, 11470, 11840, 13888, 14056, 15562, 16058, 16064, 16576, 17360, 17570, 18352, 18574, 20080, 20720, 22940, 28112, 31124, 32116, 34720, 35140, 36704, 37148, 38905, 40145, 40160, 41440, 45880, 46435, 54467, 56224, 62248, 64232, 65009, 69440, 70280, 73408, 74296, 77810, 80290, 80320, 82880, 91760, 92870, 108934, 112448, 124496, 128464, 130018, 140560, 148592, 155620, 160580, 183520, 185740, 217868, 248992, 256928, 260036, 272335, 281120, 287897, 297184, 311240, 321160, 325045, 367040, 371480, 435736, 497984, 513856, 520072, 544670, 562240, 575794, 594368, 622480, 642320, 650090, 742960, 871472, 1040144, 1089340, 1151588, 1244960, 1284640, 1300180, 1439485, 1485920, 1742944, 2015279, 2080288, 2178680, 2303176, 2489920, 2569280, 2600360, 2878970, 2971840, 3485888, 4030558, 4160576, 4357360, 4606352, 5200720, 5757940, 8061116, 8714720, 9212704, 10076395, 10401440, 11515880, 16122232, 17429440, 18425408, 20152790, 20802880, 23031760, 32244464, 40305580, 46063520, 64488928, 80611160, 92127040, 128977856, 161222320, 322444640, 644889280]

約数ペア:

[(1, 644889280), (2, 322444640), (4, 161222320), (5, 128977856), (7, 92127040), (8, 80611160), (10, 64488928), (14, 46063520), (16, 40305580), (20, 32244464), (28, 23031760), (31, 20802880), (32, 20152790), (35, 18425408), (37, 17429440), (40, 16122232), (56, 11515880), (62, 10401440), (64, 10076395), (70, 9212704), (74, 8714720), (80, 8061116), (112, 5757940), (124, 5200720), (140, 4606352), (148, 4357360), (155, 4160576), (160, 4030558), (185, 3485888), (217, 2971840), (224, 2878970), (248, 2600360), (251, 2569280), (259, 2489920), (280, 2303176), (296, 2178680), (310, 2080288), (320, 2015279), (370, 1742944), (434, 1485920), (448, 1439485), (496, 1300180), (502, 1284640), (518, 1244960), (560, 1151588), (592, 1089340), (620, 1040144), (740, 871472), (868, 742960), (992, 650090), (1004, 642320), (1036, 622480), (1085, 594368), (1120, 575794), (1147, 562240), (1184, 544670), (1240, 520072), (1255, 513856), (1295, 497984), (1480, 435736), (1736, 371480), (1757, 367040), (1984, 325045), (2008, 321160), (2072, 311240), (2170, 297184), (2240, 287897), (2294, 281120), (2368, 272335), (2480, 260036), (2510, 256928), (2590, 248992), (2960, 217868), (3472, 185740), (3514, 183520), (4016, 160580), (4144, 155620), (4340, 148592), (4588, 140560), (4960, 130018), (5020, 128464), (5180, 124496), (5735, 112448), (5920, 108934), (6944, 92870), (7028, 91760), (7781, 82880), (8029, 80320), (8032, 80290), (8288, 77810), (8680, 74296), (8785, 73408), (9176, 70280), (9287, 69440), (9920, 65009), (10040, 64232), (10360, 62248), (11470, 56224), (11840, 54467), (13888, 46435), (14056, 45880), (15562, 41440), (16058, 40160), (16064, 40145), (16576, 38905), (17360, 37148), (17570, 36704), (18352, 35140), (18574, 34720), (20080, 32116), (20720, 31124), (22940, 28112)]