320424440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:409

約数の個数: 128

約数和(自身を含む): 855930240

約数和(自身を除く): 535505800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 157, 185, 197, 259, 280, 296, 314, 370, 394, 518, 628, 740, 785, 788, 985, 1036, 1099, 1256, 1295, 1379, 1480, 1570, 1576, 1970, 2072, 2198, 2590, 2758, 3140, 3940, 4396, 5180, 5495, 5516, 5809, 6280, 6895, 7289, 7880, 8792, 10360, 10990, 11032, 11618, 13790, 14578, 21980, 23236, 27580, 29045, 29156, 30929, 36445, 40663, 43960, 46472, 51023, 55160, 58090, 58312, 61858, 72890, 81326, 102046, 116180, 123716, 145780, 154645, 162652, 203315, 204092, 216503, 232360, 247432, 255115, 291560, 309290, 325304, 406630, 408184, 433006, 510230, 618580, 813260, 866012, 1020460, 1082515, 1144373, 1237160, 1626520, 1732024, 2040920, 2165030, 2288746, 4330060, 4577492, 5721865, 8010611, 8660120, 9154984, 11443730, 16021222, 22887460, 32042444, 40053055, 45774920, 64084888, 80106110, 160212220, 320424440]

約数ペア:

[(1, 320424440), (2, 160212220), (4, 80106110), (5, 64084888), (7, 45774920), (8, 40053055), (10, 32042444), (14, 22887460), (20, 16021222), (28, 11443730), (35, 9154984), (37, 8660120), (40, 8010611), (56, 5721865), (70, 4577492), (74, 4330060), (140, 2288746), (148, 2165030), (157, 2040920), (185, 1732024), (197, 1626520), (259, 1237160), (280, 1144373), (296, 1082515), (314, 1020460), (370, 866012), (394, 813260), (518, 618580), (628, 510230), (740, 433006), (785, 408184), (788, 406630), (985, 325304), (1036, 309290), (1099, 291560), (1256, 255115), (1295, 247432), (1379, 232360), (1480, 216503), (1570, 204092), (1576, 203315), (1970, 162652), (2072, 154645), (2198, 145780), (2590, 123716), (2758, 116180), (3140, 102046), (3940, 81326), (4396, 72890), (5180, 61858), (5495, 58312), (5516, 58090), (5809, 55160), (6280, 51023), (6895, 46472), (7289, 43960), (7880, 40663), (8792, 36445), (10360, 30929), (10990, 29156), (11032, 29045), (11618, 27580), (13790, 23236), (14578, 21980)]