1991831667840

素因数分解:

$2^7\times 3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{10513}}^1$

素因数の和:10709

約数の個数: 768

約数和(自身を含む): 8137412075520

約数和(自身を除く): 6145580407680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 37, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 74, 80, 84, 90, 96, 105, 111, 112, 120, 126, 127, 128, 140, 144, 148, 160, 168, 180, 185, 192, 210, 222, 224, 240, 252, 254, 259, 280, 288, 296, 315, 320, 333, 336, 360, 370, 381, 384, 420, 444, 448, 480, 504, 508, 518, 555, 560, 576, 592, 630, 635, 640, 666, 672, 720, 740, 762, 777, 840, 888, 889, 896, 960, 1008, 1016, 1036, 1110, 1120, 1143, 1152, 1184, 1260, 1270, 1295, 1332, 1344, 1440, 1480, 1524, 1554, 1665, 1680, 1776, 1778, 1905, 1920, 2016, 2032, 2072, 2220, 2240, 2286, 2331, 2368, 2520, 2540, 2590, 2664, 2667, 2688, 2880, 2960, 3048, 3108, 3330, 3360, 3552, 3556, 3810, 3885, 4032, 4064, 4144, 4440, 4445, 4480, 4572, 4662, 4699, 4736, 5040, 5080, 5180, 5328, 5334, 5715, 5760, 5920, 6096, 6216, 6660, 6720, 7104, 7112, 7620, 7770, 8001, 8064, 8128, 8288, 8880, 8890, 9144, 9324, 9398, 10080, 10160, 10360, 10513, 10656, 10668, 11430, 11655, 11840, 12192, 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約数ペア:

[(1, 1991831667840), (2, 995915833920), (3, 663943889280), (4, 497957916960), (5, 398366333568), (6, 331971944640), (7, 284547381120), (8, 248978958480), (9, 221314629760), (10, 199183166784), (12, 165985972320), (14, 142273690560), (15, 132788777856), (16, 124489479240), (18, 110657314880), (20, 99591583392), (21, 94849127040), (24, 82992986160), (28, 71136845280), (30, 66394388928), (32, 62244739620), (35, 56909476224), (36, 55328657440), (37, 53833288320), (40, 49795791696), (42, 47424563520), (45, 44262925952), (48, 41496493080), (56, 35568422640), (60, 33197194464), (63, 31616375680), (64, 31122369810), (70, 28454738112), (72, 27664328720), (74, 26916644160), (80, 24897895848), (84, 23712281760), (90, 22131462976), (96, 20748246540), (105, 18969825408), (111, 17944429440), (112, 17784211320), (120, 16598597232), (126, 15808187840), (127, 15683713920), (128, 15561184905), (140, 14227369056), (144, 13832164360), (148, 13458322080), (160, 12448947924), (168, 11856140880), (180, 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