399783040

素因数分解:

$2^7\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:334

約数の個数: 128

約数和(自身を含む): 996336000

約数和(自身を除く): 596552960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 73, 80, 86, 128, 146, 160, 172, 199, 215, 292, 320, 344, 365, 398, 430, 584, 640, 688, 730, 796, 860, 995, 1168, 1376, 1460, 1592, 1720, 1990, 2336, 2752, 2920, 3139, 3184, 3440, 3980, 4672, 5504, 5840, 6278, 6368, 6880, 7960, 8557, 9344, 11680, 12556, 12736, 13760, 14527, 15695, 15920, 17114, 23360, 25112, 25472, 27520, 29054, 31390, 31840, 34228, 42785, 46720, 50224, 58108, 62780, 63680, 68456, 72635, 85570, 100448, 116216, 125560, 127360, 136912, 145270, 171140, 200896, 232432, 251120, 273824, 290540, 342280, 401792, 464864, 502240, 547648, 581080, 624661, 684560, 929728, 1004480, 1095296, 1162160, 1249322, 1369120, 1859456, 2008960, 2324320, 2498644, 2738240, 3123305, 4648640, 4997288, 5476480, 6246610, 9297280, 9994576, 12493220, 19989152, 24986440, 39978304, 49972880, 79956608, 99945760, 199891520, 399783040]

約数ペア:

[(1, 399783040), (2, 199891520), (4, 99945760), (5, 79956608), (8, 49972880), (10, 39978304), (16, 24986440), (20, 19989152), (32, 12493220), (40, 9994576), (43, 9297280), (64, 6246610), (73, 5476480), (80, 4997288), (86, 4648640), (128, 3123305), (146, 2738240), (160, 2498644), (172, 2324320), (199, 2008960), (215, 1859456), (292, 1369120), (320, 1249322), (344, 1162160), (365, 1095296), (398, 1004480), (430, 929728), (584, 684560), (640, 624661), (688, 581080), (730, 547648), (796, 502240), (860, 464864), (995, 401792), (1168, 342280), (1376, 290540), (1460, 273824), (1592, 251120), (1720, 232432), (1990, 200896), (2336, 171140), (2752, 145270), (2920, 136912), (3139, 127360), (3184, 125560), (3440, 116216), (3980, 100448), (4672, 85570), (5504, 72635), (5840, 68456), (6278, 63680), (6368, 62780), (6880, 58108), (7960, 50224), (8557, 46720), (9344, 42785), (11680, 34228), (12556, 31840), (12736, 31390), (13760, 29054), (14527, 27520), (15695, 25472), (15920, 25112), (17114, 23360)]