131231520

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{277}}^1$

素因数の和:352

約数の個数: 288

約数和(自身を含む): 524579328

約数和(自身を除く): 393347808

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 47, 48, 56, 60, 63, 70, 72, 80, 84, 90, 94, 96, 105, 112, 120, 126, 140, 141, 144, 160, 168, 180, 188, 210, 224, 235, 240, 252, 277, 280, 282, 288, 315, 329, 336, 360, 376, 420, 423, 470, 480, 504, 554, 560, 564, 630, 658, 672, 705, 720, 752, 831, 840, 846, 940, 987, 1008, 1108, 1120, 1128, 1260, 1316, 1385, 1410, 1440, 1504, 1645, 1662, 1680, 1692, 1880, 1939, 1974, 2016, 2115, 2216, 2256, 2493, 2520, 2632, 2770, 2820, 2961, 3290, 3324, 3360, 3384, 3760, 3878, 3948, 4155, 4230, 4432, 4512, 4935, 4986, 5040, 5264, 5540, 5640, 5817, 5922, 6580, 6648, 6768, 7520, 7756, 7896, 8310, 8460, 8864, 9695, 9870, 9972, 10080, 10528, 11080, 11280, 11634, 11844, 12465, 13019, 13160, 13296, 13536, 14805, 15512, 15792, 16620, 16920, 17451, 19390, 19740, 19944, 22160, 22560, 23268, 23688, 24930, 26038, 26320, 26592, 29085, 29610, 31024, 31584, 33240, 33840, 34902, 38780, 39057, 39480, 39888, 44320, 46536, 47376, 49860, 52076, 52640, 58170, 59220, 62048, 65095, 66480, 67680, 69804, 77560, 78114, 78960, 79776, 87255, 91133, 93072, 94752, 99720, 104152, 116340, 117171, 118440, 130190, 132960, 139608, 155120, 156228, 157920, 174510, 182266, 186144, 195285, 199440, 208304, 232680, 234342, 236880, 260380, 273399, 279216, 310240, 312456, 349020, 364532, 390570, 398880, 416608, 455665, 465360, 468684, 473760, 520760, 546798, 558432, 585855, 624912, 698040, 729064, 781140, 820197, 911330, 930720, 937368, 1041520, 1093596, 1171710, 1249824, 1366995, 1396080, 1458128, 1562280, 1640394, 1822660, 1874736, 2083040, 2187192, 2343420, 2733990, 2792160, 2916256, 3124560, 3280788, 3645320, 3749472, 4100985, 4374384, 4686840, 5467980, 6249120, 6561576, 7290640, 8201970, 8748768, 9373680, 10935960, 13123152, 14581280, 16403940, 18747360, 21871920, 26246304, 32807880, 43743840, 65615760, 131231520]

約数ペア:

[(1, 131231520), (2, 65615760), (3, 43743840), (4, 32807880), (5, 26246304), (6, 21871920), (7, 18747360), (8, 16403940), (9, 14581280), (10, 13123152), (12, 10935960), (14, 9373680), (15, 8748768), (16, 8201970), (18, 7290640), (20, 6561576), (21, 6249120), (24, 5467980), (28, 4686840), (30, 4374384), (32, 4100985), (35, 3749472), (36, 3645320), (40, 3280788), (42, 3124560), (45, 2916256), (47, 2792160), (48, 2733990), (56, 2343420), (60, 2187192), (63, 2083040), (70, 1874736), (72, 1822660), (80, 1640394), (84, 1562280), (90, 1458128), (94, 1396080), (96, 1366995), (105, 1249824), (112, 1171710), (120, 1093596), (126, 1041520), (140, 937368), (141, 930720), (144, 911330), (160, 820197), (168, 781140), (180, 729064), (188, 698040), (210, 624912), (224, 585855), (235, 558432), (240, 546798), (252, 520760), (277, 473760), (280, 468684), (282, 465360), (288, 455665), (315, 416608), (329, 398880), (336, 390570), (360, 364532), (376, 349020), (420, 312456), (423, 310240), (470, 279216), (480, 273399), (504, 260380), (554, 236880), (560, 234342), (564, 232680), (630, 208304), (658, 199440), (672, 195285), (705, 186144), (720, 182266), (752, 174510), (831, 157920), (840, 156228), (846, 155120), (940, 139608), (987, 132960), (1008, 130190), (1108, 118440), (1120, 117171), (1128, 116340), (1260, 104152), (1316, 99720), (1385, 94752), (1410, 93072), (1440, 91133), (1504, 87255), (1645, 79776), (1662, 78960), (1680, 78114), (1692, 77560), (1880, 69804), (1939, 67680), (1974, 66480), (2016, 65095), (2115, 62048), (2216, 59220), (2256, 58170), (2493, 52640), (2520, 52076), (2632, 49860), (2770, 47376), (2820, 46536), (2961, 44320), (3290, 39888), (3324, 39480), (3360, 39057), (3384, 38780), (3760, 34902), (3878, 33840), (3948, 33240), (4155, 31584), (4230, 31024), (4432, 29610), (4512, 29085), (4935, 26592), (4986, 26320), (5040, 26038), (5264, 24930), (5540, 23688), (5640, 23268), (5817, 22560), (5922, 22160), (6580, 19944), (6648, 19740), (6768, 19390), (7520, 17451), (7756, 16920), (7896, 16620), (8310, 15792), (8460, 15512), (8864, 14805), (9695, 13536), (9870, 13296), (9972, 13160), (10080, 13019), (10528, 12465), (11080, 11844), (11280, 11634)]