420542720

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:360

約数の個数: 144

約数和(自身を含む): 1098854400

約数和(自身を除く): 678311680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 127, 128, 130, 160, 199, 208, 254, 256, 260, 320, 398, 416, 508, 520, 635, 640, 796, 832, 995, 1016, 1040, 1270, 1280, 1592, 1651, 1664, 1990, 2032, 2080, 2540, 2587, 3184, 3302, 3328, 3980, 4064, 4160, 5080, 5174, 6368, 6604, 7960, 8128, 8255, 8320, 10160, 10348, 12736, 12935, 13208, 15920, 16256, 16510, 16640, 20320, 20696, 25273, 25472, 25870, 26416, 31840, 32512, 33020, 40640, 41392, 50546, 50944, 51740, 52832, 63680, 66040, 81280, 82784, 101092, 103480, 105664, 126365, 127360, 132080, 162560, 165568, 202184, 206960, 211328, 252730, 254720, 264160, 328549, 331136, 404368, 413920, 422656, 505460, 528320, 657098, 662272, 808736, 827840, 1010920, 1056640, 1314196, 1617472, 1642745, 1655680, 2021840, 2113280, 2628392, 3234944, 3285490, 3311360, 4043680, 5256784, 6469888, 6570980, 8087360, 10513568, 13141960, 16174720, 21027136, 26283920, 32349440, 42054272, 52567840, 84108544, 105135680, 210271360, 420542720]

約数ペア:

[(1, 420542720), (2, 210271360), (4, 105135680), (5, 84108544), (8, 52567840), (10, 42054272), (13, 32349440), (16, 26283920), (20, 21027136), (26, 16174720), (32, 13141960), (40, 10513568), (52, 8087360), (64, 6570980), (65, 6469888), (80, 5256784), (104, 4043680), (127, 3311360), (128, 3285490), (130, 3234944), (160, 2628392), (199, 2113280), (208, 2021840), (254, 1655680), (256, 1642745), (260, 1617472), (320, 1314196), (398, 1056640), (416, 1010920), (508, 827840), (520, 808736), (635, 662272), (640, 657098), (796, 528320), (832, 505460), (995, 422656), (1016, 413920), (1040, 404368), (1270, 331136), (1280, 328549), (1592, 264160), (1651, 254720), (1664, 252730), (1990, 211328), (2032, 206960), (2080, 202184), (2540, 165568), (2587, 162560), (3184, 132080), (3302, 127360), (3328, 126365), (3980, 105664), (4064, 103480), (4160, 101092), (5080, 82784), (5174, 81280), (6368, 66040), (6604, 63680), (7960, 52832), (8128, 51740), (8255, 50944), (8320, 50546), (10160, 41392), (10348, 40640), (12736, 33020), (12935, 32512), (13208, 31840), (15920, 26416), (16256, 25870), (16510, 25472), (16640, 25273), (20320, 20696)]