81812880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{571}}^1$

素因数の和:789

約数の個数: 120

約数和(自身を含む): 276619200

約数和(自身を除く): 194806320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 199, 240, 360, 398, 571, 597, 720, 796, 995, 1142, 1194, 1592, 1713, 1791, 1990, 2284, 2388, 2855, 2985, 3184, 3426, 3582, 3980, 4568, 4776, 5139, 5710, 5970, 6852, 7164, 7960, 8565, 8955, 9136, 9552, 10278, 11420, 11940, 13704, 14328, 15920, 17130, 17910, 20556, 22840, 23880, 25695, 27408, 28656, 34260, 35820, 41112, 45680, 47760, 51390, 68520, 71640, 82224, 102780, 113629, 137040, 143280, 205560, 227258, 340887, 411120, 454516, 568145, 681774, 909032, 1022661, 1136290, 1363548, 1704435, 1818064, 2045322, 2272580, 2727096, 3408870, 4090644, 4545160, 5113305, 5454192, 6817740, 8181288, 9090320, 10226610, 13635480, 16362576, 20453220, 27270960, 40906440, 81812880]

約数ペア:

[(1, 81812880), (2, 40906440), (3, 27270960), (4, 20453220), (5, 16362576), (6, 13635480), (8, 10226610), (9, 9090320), (10, 8181288), (12, 6817740), (15, 5454192), (16, 5113305), (18, 4545160), (20, 4090644), (24, 3408870), (30, 2727096), (36, 2272580), (40, 2045322), (45, 1818064), (48, 1704435), (60, 1363548), (72, 1136290), (80, 1022661), (90, 909032), (120, 681774), (144, 568145), (180, 454516), (199, 411120), (240, 340887), (360, 227258), (398, 205560), (571, 143280), (597, 137040), (720, 113629), (796, 102780), (995, 82224), (1142, 71640), (1194, 68520), (1592, 51390), (1713, 47760), (1791, 45680), (1990, 41112), (2284, 35820), (2388, 34260), (2855, 28656), (2985, 27408), (3184, 25695), (3426, 23880), (3582, 22840), (3980, 20556), (4568, 17910), (4776, 17130), (5139, 15920), (5710, 14328), (5970, 13704), (6852, 11940), (7164, 11420), (7960, 10278), (8565, 9552), (8955, 9136)]