640578840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:474

約数の個数: 192

約数和(自身を含む): 2133341280

約数和(自身を除く): 1492762440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 121, 132, 157, 165, 220, 242, 264, 281, 314, 330, 363, 440, 471, 484, 562, 605, 628, 660, 726, 785, 843, 942, 968, 1124, 1210, 1256, 1320, 1405, 1452, 1570, 1686, 1727, 1815, 1884, 2248, 2355, 2420, 2810, 2904, 3091, 3140, 3372, 3454, 3630, 3768, 4215, 4710, 4840, 5181, 5620, 6182, 6280, 6744, 6908, 7260, 8430, 8635, 9273, 9420, 10362, 11240, 12364, 13816, 14520, 15455, 16860, 17270, 18546, 18840, 18997, 20724, 24728, 25905, 30910, 33720, 34001, 34540, 37092, 37994, 41448, 44117, 46365, 51810, 56991, 61820, 68002, 69080, 74184, 75988, 88234, 92730, 94985, 102003, 103620, 113982, 123640, 132351, 136004, 151976, 170005, 176468, 185460, 189970, 204006, 207240, 220585, 227964, 264702, 272008, 284955, 340010, 352936, 370920, 379940, 408012, 441170, 455928, 485287, 510015, 529404, 569910, 661755, 680020, 759880, 816024, 882340, 970574, 1020030, 1058808, 1139820, 1323510, 1360040, 1455861, 1764680, 1941148, 2040060, 2279640, 2426435, 2647020, 2911722, 3882296, 4080120, 4852870, 5294040, 5338157, 5823444, 7279305, 9705740, 10676314, 11646888, 14558610, 16014471, 19411480, 21352628, 26690785, 29117220, 32028942, 42705256, 53381570, 58234440, 64057884, 80072355, 106763140, 128115768, 160144710, 213526280, 320289420, 640578840]

約数ペア:

[(1, 640578840), (2, 320289420), (3, 213526280), (4, 160144710), (5, 128115768), (6, 106763140), (8, 80072355), (10, 64057884), (11, 58234440), (12, 53381570), (15, 42705256), (20, 32028942), (22, 29117220), (24, 26690785), (30, 21352628), (33, 19411480), (40, 16014471), (44, 14558610), (55, 11646888), (60, 10676314), (66, 9705740), (88, 7279305), (110, 5823444), (120, 5338157), (121, 5294040), (132, 4852870), (157, 4080120), (165, 3882296), (220, 2911722), (242, 2647020), (264, 2426435), (281, 2279640), (314, 2040060), (330, 1941148), (363, 1764680), (440, 1455861), (471, 1360040), (484, 1323510), (562, 1139820), (605, 1058808), (628, 1020030), (660, 970574), (726, 882340), (785, 816024), (843, 759880), (942, 680020), (968, 661755), (1124, 569910), (1210, 529404), (1256, 510015), (1320, 485287), (1405, 455928), (1452, 441170), (1570, 408012), (1686, 379940), (1727, 370920), (1815, 352936), (1884, 340010), (2248, 284955), (2355, 272008), (2420, 264702), (2810, 227964), (2904, 220585), (3091, 207240), (3140, 204006), (3372, 189970), (3454, 185460), (3630, 176468), (3768, 170005), (4215, 151976), (4710, 136004), (4840, 132351), (5181, 123640), (5620, 113982), (6182, 103620), (6280, 102003), (6744, 94985), (6908, 92730), (7260, 88234), (8430, 75988), (8635, 74184), (9273, 69080), (9420, 68002), (10362, 61820), (11240, 56991), (12364, 51810), (13816, 46365), (14520, 44117), (15455, 41448), (16860, 37994), (17270, 37092), (18546, 34540), (18840, 34001), (18997, 33720), (20724, 30910), (24728, 25905)]