1820595280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{199}}^1$

素因数の和:298

約数の個数: 240

約数和(自身を含む): 5319302400

約数和(自身を除く): 3498707120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 31, 34, 35, 40, 56, 62, 68, 70, 80, 85, 112, 119, 124, 136, 140, 155, 170, 199, 217, 238, 248, 272, 280, 310, 340, 398, 434, 476, 496, 527, 560, 595, 620, 680, 796, 868, 952, 961, 995, 1054, 1085, 1190, 1240, 1360, 1393, 1592, 1736, 1904, 1922, 1990, 2108, 2170, 2380, 2480, 2635, 2786, 3184, 3383, 3472, 3689, 3844, 3980, 4216, 4340, 4760, 4805, 5270, 5572, 6169, 6727, 6766, 6965, 7378, 7688, 7960, 8432, 8680, 9520, 9610, 10540, 11144, 12338, 13454, 13532, 13930, 14756, 15376, 15920, 16337, 16915, 17360, 18445, 19220, 21080, 22288, 23681, 24676, 26908, 27064, 27860, 29512, 30845, 32674, 33635, 33830, 36890, 38440, 42160, 43183, 47362, 49352, 53816, 54128, 55720, 59024, 61690, 65348, 67270, 67660, 73780, 76880, 81685, 86366, 94724, 98704, 104873, 107632, 111440, 114359, 118405, 123380, 130696, 134540, 135320, 147560, 163370, 172732, 189448, 191239, 209746, 215915, 228718, 236810, 246760, 261392, 269080, 270640, 295120, 326740, 345464, 378896, 382478, 419492, 431830, 457436, 473620, 493520, 524365, 538160, 571795, 653480, 690928, 734111, 764956, 838984, 863660, 914872, 947240, 956195, 1048730, 1143590, 1306960, 1338673, 1468222, 1529912, 1677968, 1727320, 1829744, 1894480, 1912390, 2097460, 2287180, 2677346, 2936444, 3059824, 3251063, 3454640, 3670555, 3824780, 4194920, 4574360, 5354692, 5872888, 6502126, 6693365, 7341110, 7649560, 8389840, 9148720, 10709384, 11745776, 13004252, 13386730, 14682220, 15299120, 16255315, 21418768, 22757441, 26008504, 26773460, 29364440, 32510630, 45514882, 52017008, 53546920, 58728880, 65021260, 91029764, 107093840, 113787205, 130042520, 182059528, 227574410, 260085040, 364119056, 455148820, 910297640, 1820595280]

約数ペア:

[(1, 1820595280), (2, 910297640), (4, 455148820), (5, 364119056), (7, 260085040), (8, 227574410), (10, 182059528), (14, 130042520), (16, 113787205), (17, 107093840), (20, 91029764), (28, 65021260), (31, 58728880), (34, 53546920), (35, 52017008), (40, 45514882), (56, 32510630), (62, 29364440), (68, 26773460), (70, 26008504), (80, 22757441), (85, 21418768), (112, 16255315), (119, 15299120), (124, 14682220), (136, 13386730), (140, 13004252), (155, 11745776), (170, 10709384), (199, 9148720), (217, 8389840), (238, 7649560), (248, 7341110), (272, 6693365), (280, 6502126), (310, 5872888), (340, 5354692), (398, 4574360), (434, 4194920), (476, 3824780), (496, 3670555), (527, 3454640), (560, 3251063), (595, 3059824), (620, 2936444), (680, 2677346), (796, 2287180), (868, 2097460), (952, 1912390), (961, 1894480), (995, 1829744), (1054, 1727320), (1085, 1677968), (1190, 1529912), (1240, 1468222), (1360, 1338673), (1393, 1306960), (1592, 1143590), (1736, 1048730), (1904, 956195), (1922, 947240), (1990, 914872), (2108, 863660), (2170, 838984), (2380, 764956), (2480, 734111), (2635, 690928), (2786, 653480), (3184, 571795), (3383, 538160), (3472, 524365), (3689, 493520), (3844, 473620), (3980, 457436), (4216, 431830), (4340, 419492), (4760, 382478), (4805, 378896), (5270, 345464), (5572, 326740), (6169, 295120), (6727, 270640), (6766, 269080), (6965, 261392), (7378, 246760), (7688, 236810), (7960, 228718), (8432, 215915), (8680, 209746), (9520, 191239), (9610, 189448), (10540, 172732), (11144, 163370), (12338, 147560), (13454, 135320), (13532, 134540), (13930, 130696), (14756, 123380), (15376, 118405), (15920, 114359), (16337, 111440), (16915, 107632), (17360, 104873), (18445, 98704), (19220, 94724), (21080, 86366), (22288, 81685), (23681, 76880), (24676, 73780), (26908, 67660), (27064, 67270), (27860, 65348), (29512, 61690), (30845, 59024), (32674, 55720), (33635, 54128), (33830, 53816), (36890, 49352), (38440, 47362), (42160, 43183)]