1990475280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{347}}^1$

素因数の和:654

約数の個数: 240

約数和(自身を含む): 6947126784

約数和(自身を除く): 4956651504

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 120, 124, 144, 155, 180, 186, 240, 248, 257, 279, 310, 347, 360, 372, 465, 496, 514, 558, 620, 694, 720, 744, 771, 930, 1028, 1041, 1116, 1240, 1285, 1388, 1395, 1488, 1542, 1735, 1860, 2056, 2082, 2232, 2313, 2480, 2570, 2776, 2790, 3084, 3123, 3470, 3720, 3855, 4112, 4164, 4464, 4626, 5140, 5205, 5552, 5580, 6168, 6246, 6940, 7440, 7710, 7967, 8328, 9252, 10280, 10410, 10757, 11160, 11565, 12336, 12492, 13880, 15420, 15615, 15934, 16656, 18504, 20560, 20820, 21514, 22320, 23130, 23901, 24984, 27760, 30840, 31230, 31868, 32271, 37008, 39835, 41640, 43028, 46260, 47802, 49968, 53785, 61680, 62460, 63736, 64542, 71703, 79670, 83280, 86056, 89179, 92520, 95604, 96813, 107570, 119505, 124920, 127472, 129084, 143406, 159340, 161355, 172112, 178358, 185040, 191208, 193626, 215140, 239010, 249840, 258168, 267537, 286812, 318680, 322710, 356716, 358515, 382416, 387252, 430280, 445895, 478020, 484065, 516336, 535074, 573624, 637360, 645420, 713432, 717030, 774504, 802611, 860560, 891790, 956040, 968130, 1070148, 1147248, 1290840, 1337685, 1426864, 1434060, 1549008, 1605222, 1783580, 1912080, 1936260, 2140296, 2581680, 2675370, 2764549, 2868120, 3210444, 3567160, 3872520, 4013055, 4280592, 5350740, 5529098, 5736240, 6420888, 7134320, 7745040, 8026110, 8293647, 10701480, 11058196, 12841776, 13822745, 16052220, 16587294, 21402960, 22116392, 24880941, 27645490, 32104440, 33174588, 41468235, 44232784, 49761882, 55290980, 64208880, 66349176, 82936470, 99523764, 110581960, 124404705, 132698352, 165872940, 199047528, 221163920, 248809410, 331745880, 398095056, 497618820, 663491760, 995237640, 1990475280]

約数ペア:

[(1, 1990475280), (2, 995237640), (3, 663491760), (4, 497618820), (5, 398095056), (6, 331745880), (8, 248809410), (9, 221163920), (10, 199047528), (12, 165872940), (15, 132698352), (16, 124404705), (18, 110581960), (20, 99523764), (24, 82936470), (30, 66349176), (31, 64208880), (36, 55290980), (40, 49761882), (45, 44232784), (48, 41468235), (60, 33174588), (62, 32104440), (72, 27645490), (80, 24880941), (90, 22116392), (93, 21402960), (120, 16587294), (124, 16052220), (144, 13822745), (155, 12841776), (180, 11058196), (186, 10701480), (240, 8293647), (248, 8026110), (257, 7745040), (279, 7134320), (310, 6420888), (347, 5736240), (360, 5529098), (372, 5350740), (465, 4280592), (496, 4013055), (514, 3872520), (558, 3567160), (620, 3210444), (694, 2868120), (720, 2764549), (744, 2675370), (771, 2581680), (930, 2140296), (1028, 1936260), (1041, 1912080), (1116, 1783580), (1240, 1605222), (1285, 1549008), (1388, 1434060), (1395, 1426864), (1488, 1337685), (1542, 1290840), (1735, 1147248), (1860, 1070148), (2056, 968130), (2082, 956040), (2232, 891790), (2313, 860560), (2480, 802611), (2570, 774504), (2776, 717030), (2790, 713432), (3084, 645420), (3123, 637360), (3470, 573624), (3720, 535074), (3855, 516336), (4112, 484065), (4164, 478020), (4464, 445895), (4626, 430280), (5140, 387252), (5205, 382416), (5552, 358515), (5580, 356716), (6168, 322710), (6246, 318680), (6940, 286812), (7440, 267537), (7710, 258168), (7967, 249840), (8328, 239010), (9252, 215140), (10280, 193626), (10410, 191208), (10757, 185040), (11160, 178358), (11565, 172112), (12336, 161355), (12492, 159340), (13880, 143406), (15420, 129084), (15615, 127472), (15934, 124920), (16656, 119505), (18504, 107570), (20560, 96813), (20820, 95604), (21514, 92520), (22320, 89179), (23130, 86056), (23901, 83280), (24984, 79670), (27760, 71703), (30840, 64542), (31230, 63736), (31868, 62460), (32271, 61680), (37008, 53785), (39835, 49968), (41640, 47802), (43028, 46260)]