257623920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:420

約数の個数: 240

約数和(自身を含む): 924797952

約数和(自身を除く): 667174032

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 40, 45, 46, 47, 48, 60, 69, 72, 80, 90, 92, 94, 115, 120, 138, 141, 144, 180, 184, 188, 207, 230, 235, 240, 276, 282, 331, 345, 360, 368, 376, 414, 423, 460, 470, 552, 564, 662, 690, 705, 720, 752, 828, 846, 920, 940, 993, 1035, 1081, 1104, 1128, 1324, 1380, 1410, 1655, 1656, 1692, 1840, 1880, 1986, 2070, 2115, 2162, 2256, 2648, 2760, 2820, 2979, 3243, 3310, 3312, 3384, 3760, 3972, 4140, 4230, 4324, 4965, 5296, 5405, 5520, 5640, 5958, 6486, 6620, 6768, 7613, 7944, 8280, 8460, 8648, 9729, 9930, 10810, 11280, 11916, 12972, 13240, 14895, 15226, 15557, 15888, 16215, 16560, 16920, 17296, 19458, 19860, 21620, 22839, 23832, 25944, 26480, 29790, 30452, 31114, 32430, 33840, 38065, 38916, 39720, 43240, 45678, 46671, 47664, 48645, 51888, 59580, 60904, 62228, 64860, 68517, 76130, 77785, 77832, 79440, 86480, 91356, 93342, 97290, 114195, 119160, 121808, 124456, 129720, 137034, 140013, 152260, 155570, 155664, 182712, 186684, 194580, 228390, 233355, 238320, 248912, 259440, 274068, 280026, 304520, 311140, 342585, 357811, 365424, 373368, 389160, 456780, 466710, 548136, 560052, 609040, 622280, 685170, 700065, 715622, 746736, 778320, 913560, 933420, 1073433, 1096272, 1120104, 1244560, 1370340, 1400130, 1431244, 1789055, 1827120, 1866840, 2146866, 2240208, 2740680, 2800260, 2862488, 3220299, 3578110, 3733680, 4293732, 5367165, 5481360, 5600520, 5724976, 6440598, 7156220, 8587464, 10734330, 11201040, 12881196, 14312440, 16101495, 17174928, 21468660, 25762392, 28624880, 32202990, 42937320, 51524784, 64405980, 85874640, 128811960, 257623920]

約数ペア:

[(1, 257623920), (2, 128811960), (3, 85874640), (4, 64405980), (5, 51524784), (6, 42937320), (8, 32202990), (9, 28624880), (10, 25762392), (12, 21468660), (15, 17174928), (16, 16101495), (18, 14312440), (20, 12881196), (23, 11201040), (24, 10734330), (30, 8587464), (36, 7156220), (40, 6440598), (45, 5724976), (46, 5600520), (47, 5481360), (48, 5367165), (60, 4293732), (69, 3733680), (72, 3578110), (80, 3220299), (90, 2862488), (92, 2800260), (94, 2740680), (115, 2240208), (120, 2146866), (138, 1866840), (141, 1827120), (144, 1789055), (180, 1431244), (184, 1400130), (188, 1370340), (207, 1244560), (230, 1120104), (235, 1096272), (240, 1073433), (276, 933420), (282, 913560), (331, 778320), (345, 746736), (360, 715622), (368, 700065), (376, 685170), (414, 622280), (423, 609040), (460, 560052), (470, 548136), (552, 466710), (564, 456780), (662, 389160), (690, 373368), (705, 365424), (720, 357811), (752, 342585), (828, 311140), (846, 304520), (920, 280026), (940, 274068), (993, 259440), (1035, 248912), (1081, 238320), (1104, 233355), (1128, 228390), (1324, 194580), (1380, 186684), (1410, 182712), (1655, 155664), (1656, 155570), (1692, 152260), (1840, 140013), (1880, 137034), (1986, 129720), (2070, 124456), (2115, 121808), (2162, 119160), (2256, 114195), (2648, 97290), (2760, 93342), (2820, 91356), (2979, 86480), (3243, 79440), (3310, 77832), (3312, 77785), (3384, 76130), (3760, 68517), (3972, 64860), (4140, 62228), (4230, 60904), (4324, 59580), (4965, 51888), (5296, 48645), (5405, 47664), (5520, 46671), (5640, 45678), (5958, 43240), (6486, 39720), (6620, 38916), (6768, 38065), (7613, 33840), (7944, 32430), (8280, 31114), (8460, 30452), (8648, 29790), (9729, 26480), (9930, 25944), (10810, 23832), (11280, 22839), (11916, 21620), (12972, 19860), (13240, 19458), (14895, 17296), (15226, 16920), (15557, 16560), (15888, 16215)]