1991277315720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^4\times {\mathrm{31}}^1\times {\mathrm{1741}}^1$

素因数の和:1840

約数の個数: 960

約数和(自身を含む): 8403006643200

約数和(自身を除く): 6411729327480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 28, 30, 31, 33, 35, 36, 40, 42, 44, 45, 55, 56, 60, 62, 63, 66, 70, 72, 77, 84, 88, 90, 93, 99, 105, 110, 120, 121, 124, 126, 132, 140, 154, 155, 165, 168, 180, 186, 198, 210, 217, 220, 231, 242, 248, 252, 264, 279, 280, 308, 310, 315, 330, 341, 360, 363, 372, 385, 396, 420, 434, 440, 462, 465, 484, 495, 504, 558, 605, 616, 620, 630, 651, 660, 682, 693, 726, 744, 770, 792, 840, 847, 868, 924, 930, 968, 990, 1023, 1085, 1089, 1116, 1155, 1210, 1240, 1260, 1302, 1320, 1331, 1364, 1386, 1395, 1452, 1540, 1694, 1705, 1736, 1741, 1815, 1848, 1860, 1953, 1980, 2046, 2170, 2178, 2232, 2310, 2387, 2420, 2520, 2541, 2604, 2662, 2728, 2772, 2790, 2904, 3069, 3080, 3255, 3388, 3410, 3465, 3482, 3630, 3720, 3751, 3906, 3960, 3993, 4092, 4235, 4340, 4356, 4620, 4774, 4840, 5082, 5115, 5208, 5223, 5324, 5445, 5544, 5580, 6138, 6510, 6655, 6776, 6820, 6930, 6964, 7161, 7260, 7502, 7623, 7812, 7986, 8184, 8470, 8680, 8705, 8712, 9240, 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約数ペア:

[(1, 1991277315720), (2, 995638657860), (3, 663759105240), (4, 497819328930), (5, 398255463144), (6, 331879552620), (7, 284468187960), (8, 248909664465), (9, 221253035080), (10, 199127731572), (11, 181025210520), (12, 165939776310), (14, 142234093980), (15, 132751821048), (18, 110626517540), (20, 99563865786), (21, 94822729320), (22, 90512605260), (24, 82969888155), (28, 71117046990), (30, 66375910524), (31, 64234752120), (33, 60341736840), (35, 56893637592), (36, 55313258770), (40, 49781932893), (42, 47411364660), (44, 45256302630), (45, 44250607016), (55, 36205042104), (56, 35558523495), (60, 33187955262), (62, 32117376060), (63, 31607576440), (66, 30170868420), (70, 28446818796), (72, 27656629385), (77, 25860744360), (84, 23705682330), (88, 22628151315), (90, 22125303508), (93, 21411584040), (99, 20113912280), (105, 18964545864), (110, 18102521052), (120, 16593977631), (121, 16456837320), (124, 16058688030), (126, 15803788220), (132, 15085434210), (140, 14223409398), (154, 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(1133391, 1756920), (1149060, 1732962), (1155308, 1723590), (1181565, 1685288), (1187362, 1677060), (1206513, 1650440), (1229844, 1619130), (1237830, 1608684), (1263966, 1575420), (1295304, 1537305), (1317690, 1511188), (1340570, 1485396), (1350360, 1474627), (1361613, 1462440), (1378872, 1444135)]