131781720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{359}}^1$

素因数の和:422

約数の個数: 256

約数和(自身を含む): 497664000

約数和(自身を除く): 365882280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 23, 24, 28, 30, 35, 38, 40, 42, 46, 56, 57, 60, 69, 70, 76, 84, 92, 95, 105, 114, 115, 120, 133, 138, 140, 152, 161, 168, 184, 190, 210, 228, 230, 266, 276, 280, 285, 322, 345, 359, 380, 399, 420, 437, 456, 460, 483, 532, 552, 570, 644, 665, 690, 718, 760, 798, 805, 840, 874, 920, 966, 1064, 1077, 1140, 1288, 1311, 1330, 1380, 1436, 1596, 1610, 1748, 1795, 1932, 1995, 2154, 2185, 2280, 2415, 2513, 2622, 2660, 2760, 2872, 3059, 3192, 3220, 3496, 3590, 3864, 3990, 4308, 4370, 4830, 5026, 5244, 5320, 5385, 6118, 6440, 6555, 6821, 7180, 7539, 7980, 8257, 8616, 8740, 9177, 9660, 10052, 10488, 10770, 12236, 12565, 13110, 13642, 14360, 15078, 15295, 15960, 16514, 17480, 18354, 19320, 20104, 20463, 21540, 24472, 24771, 25130, 26220, 27284, 30156, 30590, 33028, 34105, 36708, 37695, 40926, 41285, 43080, 45885, 47747, 49542, 50260, 52440, 54568, 57799, 60312, 61180, 66056, 68210, 73416, 75390, 81852, 82570, 91770, 95494, 99084, 100520, 102315, 115598, 122360, 123855, 136420, 143241, 150780, 156883, 163704, 165140, 173397, 183540, 190988, 198168, 204630, 231196, 238735, 247710, 272840, 286482, 288995, 301560, 313766, 330280, 346794, 367080, 381976, 409260, 462392, 470649, 477470, 495420, 572964, 577990, 627532, 693588, 716205, 784415, 818520, 866985, 941298, 954940, 990840, 1098181, 1145928, 1155980, 1255064, 1387176, 1432410, 1568830, 1733970, 1882596, 1909880, 2196362, 2311960, 2353245, 2864820, 3137660, 3294543, 3467940, 3765192, 4392724, 4706490, 5490905, 5729640, 6275320, 6589086, 6935880, 8785448, 9412980, 10981810, 13178172, 16472715, 18825960, 21963620, 26356344, 32945430, 43927240, 65890860, 131781720]

約数ペア:

[(1, 131781720), (2, 65890860), (3, 43927240), (4, 32945430), (5, 26356344), (6, 21963620), (7, 18825960), (8, 16472715), (10, 13178172), (12, 10981810), (14, 9412980), (15, 8785448), (19, 6935880), (20, 6589086), (21, 6275320), (23, 5729640), (24, 5490905), (28, 4706490), (30, 4392724), (35, 3765192), (38, 3467940), (40, 3294543), (42, 3137660), (46, 2864820), (56, 2353245), (57, 2311960), (60, 2196362), (69, 1909880), (70, 1882596), (76, 1733970), (84, 1568830), (92, 1432410), (95, 1387176), (105, 1255064), (114, 1155980), (115, 1145928), (120, 1098181), (133, 990840), (138, 954940), (140, 941298), (152, 866985), (161, 818520), (168, 784415), (184, 716205), (190, 693588), (210, 627532), (228, 577990), (230, 572964), (266, 495420), (276, 477470), (280, 470649), (285, 462392), (322, 409260), (345, 381976), (359, 367080), (380, 346794), (399, 330280), (420, 313766), (437, 301560), (456, 288995), (460, 286482), (483, 272840), (532, 247710), (552, 238735), (570, 231196), (644, 204630), (665, 198168), (690, 190988), (718, 183540), (760, 173397), (798, 165140), (805, 163704), (840, 156883), (874, 150780), (920, 143241), (966, 136420), (1064, 123855), (1077, 122360), (1140, 115598), (1288, 102315), (1311, 100520), (1330, 99084), (1380, 95494), (1436, 91770), (1596, 82570), (1610, 81852), (1748, 75390), (1795, 73416), (1932, 68210), (1995, 66056), (2154, 61180), (2185, 60312), (2280, 57799), (2415, 54568), (2513, 52440), (2622, 50260), (2660, 49542), (2760, 47747), (2872, 45885), (3059, 43080), (3192, 41285), (3220, 40926), (3496, 37695), (3590, 36708), (3864, 34105), (3990, 33028), (4308, 30590), (4370, 30156), (4830, 27284), (5026, 26220), (5244, 25130), (5320, 24771), (5385, 24472), (6118, 21540), (6440, 20463), (6555, 20104), (6821, 19320), (7180, 18354), (7539, 17480), (7980, 16514), (8257, 15960), (8616, 15295), (8740, 15078), (9177, 14360), (9660, 13642), (10052, 13110), (10488, 12565), (10770, 12236)]