19817280

素因数分解:

$2^6\times 3^2\times 5^1\times 7^1\times {\mathrm{983}}^1$

素因数の和:1013

約数の個数: 168

約数和(自身を含む): 77980032

約数和(自身を除く): 58162752

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, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 420, 448, 480, 504, 560, 576, 630, 672, 720, 840, 960, 983, 1008, 1120, 1260, 1344, 1440, 1680, 1966, 2016, 2240, 2520, 2880, 2949, 3360, 3932, 4032, 4915, 5040, 5898, 6720, 6881, 7864, 8847, 9830, 10080, 11796, 13762, 14745, 15728, 17694, 19660, 20160, 20643, 23592, 27524, 29490, 31456, 34405, 35388, 39320, 41286, 44235, 47184, 55048, 58980, 61929, 62912, 68810, 70776, 78640, 82572, 88470, 94368, 103215, 110096, 117960, 123858, 137620, 141552, 157280, 165144, 176940, 188736, 206430, 220192, 235920, 247716, 275240, 283104, 309645, 314560, 330288, 353880, 412860, 440384, 471840, 495432, 550480, 566208, 619290, 660576, 707760, 825720, 943680, 990864, 1100960, 1238580, 1321152, 1415520, 1651440, 1981728, 2201920, 2477160, 2831040, 3302880, 3963456, 4954320, 6605760, 9908640, 19817280]

約数ペア:

[(1, 19817280), (2, 9908640), (3, 6605760), (4, 4954320), (5, 3963456), (6, 3302880), (7, 2831040), (8, 2477160), (9, 2201920), (10, 1981728), (12, 1651440), (14, 1415520), (15, 1321152), (16, 1238580), (18, 1100960), (20, 990864), (21, 943680), (24, 825720), (28, 707760), (30, 660576), (32, 619290), (35, 566208), (36, 550480), (40, 495432), (42, 471840), (45, 440384), (48, 412860), (56, 353880), (60, 330288), (63, 314560), (64, 309645), (70, 283104), (72, 275240), (80, 247716), (84, 235920), (90, 220192), (96, 206430), (105, 188736), (112, 176940), (120, 165144), (126, 157280), (140, 141552), (144, 137620), (160, 123858), (168, 117960), (180, 110096), (192, 103215), (210, 94368), (224, 88470), (240, 82572), (252, 78640), (280, 70776), (288, 68810), (315, 62912), (320, 61929), (336, 58980), (360, 55048), (420, 47184), (448, 44235), (480, 41286), (504, 39320), (560, 35388), (576, 34405), (630, 31456), (672, 29490), (720, 27524), (840, 23592), (960, 20643), (983, 20160), (1008, 19660), (1120, 17694), (1260, 15728), (1344, 14745), (1440, 13762), (1680, 11796), (1966, 10080), (2016, 9830), (2240, 8847), (2520, 7864), (2880, 6881), (2949, 6720), (3360, 5898), (3932, 5040), (4032, 4915)]