20873160

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1$

素因数の和:289

約数の個数: 256

約数和(自身を含む): 87091200

約数和(自身を除く): 66218040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 27, 28, 30, 33, 35, 36, 40, 42, 44, 45, 54, 55, 56, 60, 63, 66, 70, 72, 77, 84, 88, 90, 99, 105, 108, 110, 120, 126, 132, 135, 140, 154, 165, 168, 180, 189, 198, 210, 216, 220, 231, 251, 252, 264, 270, 280, 297, 308, 315, 330, 360, 378, 385, 396, 420, 440, 462, 495, 502, 504, 540, 594, 616, 630, 660, 693, 753, 756, 770, 792, 840, 924, 945, 990, 1004, 1080, 1155, 1188, 1255, 1260, 1320, 1386, 1485, 1506, 1512, 1540, 1757, 1848, 1890, 1980, 2008, 2079, 2259, 2310, 2376, 2510, 2520, 2761, 2772, 2970, 3012, 3080, 3465, 3514, 3765, 3780, 3960, 4158, 4518, 4620, 5020, 5271, 5522, 5544, 5940, 6024, 6777, 6930, 7028, 7530, 7560, 8283, 8316, 8785, 9036, 9240, 10040, 10395, 10542, 11044, 11295, 11880, 13554, 13805, 13860, 14056, 15060, 15813, 16566, 16632, 17570, 18072, 19327, 20790, 21084, 22088, 22590, 24849, 26355, 27108, 27610, 27720, 30120, 31626, 33132, 33885, 35140, 38654, 41415, 41580, 42168, 45180, 47439, 49698, 52710, 54216, 55220, 57981, 63252, 66264, 67770, 70280, 74547, 77308, 79065, 82830, 83160, 90360, 94878, 96635, 99396, 105420, 110440, 115962, 124245, 126504, 135540, 149094, 154616, 158130, 165660, 173943, 189756, 193270, 198792, 210840, 231924, 237195, 248490, 271080, 289905, 298188, 316260, 331320, 347886, 372735, 379512, 386540, 463848, 474390, 496980, 521829, 579810, 596376, 632520, 695772, 745470, 773080, 869715, 948780, 993960, 1043658, 1159620, 1391544, 1490940, 1739430, 1897560, 2087316, 2319240, 2609145, 2981880, 3478860, 4174632, 5218290, 6957720, 10436580, 20873160]

約数ペア:

[(1, 20873160), (2, 10436580), (3, 6957720), (4, 5218290), (5, 4174632), (6, 3478860), (7, 2981880), (8, 2609145), (9, 2319240), (10, 2087316), (11, 1897560), (12, 1739430), (14, 1490940), (15, 1391544), (18, 1159620), (20, 1043658), (21, 993960), (22, 948780), (24, 869715), (27, 773080), (28, 745470), (30, 695772), (33, 632520), (35, 596376), (36, 579810), (40, 521829), (42, 496980), (44, 474390), (45, 463848), (54, 386540), (55, 379512), (56, 372735), (60, 347886), (63, 331320), (66, 316260), (70, 298188), (72, 289905), (77, 271080), (84, 248490), (88, 237195), (90, 231924), (99, 210840), (105, 198792), (108, 193270), (110, 189756), (120, 173943), (126, 165660), (132, 158130), (135, 154616), (140, 149094), (154, 135540), (165, 126504), (168, 124245), (180, 115962), (189, 110440), (198, 105420), (210, 99396), (216, 96635), (220, 94878), (231, 90360), (251, 83160), (252, 82830), (264, 79065), (270, 77308), (280, 74547), (297, 70280), (308, 67770), (315, 66264), (330, 63252), (360, 57981), (378, 55220), (385, 54216), (396, 52710), (420, 49698), (440, 47439), (462, 45180), (495, 42168), (502, 41580), (504, 41415), (540, 38654), (594, 35140), (616, 33885), (630, 33132), (660, 31626), (693, 30120), (753, 27720), (756, 27610), (770, 27108), (792, 26355), (840, 24849), (924, 22590), (945, 22088), (990, 21084), (1004, 20790), (1080, 19327), (1155, 18072), (1188, 17570), (1255, 16632), (1260, 16566), (1320, 15813), (1386, 15060), (1485, 14056), (1506, 13860), (1512, 13805), (1540, 13554), (1757, 11880), (1848, 11295), (1890, 11044), (1980, 10542), (2008, 10395), (2079, 10040), (2259, 9240), (2310, 9036), (2376, 8785), (2510, 8316), (2520, 8283), (2761, 7560), (2772, 7530), (2970, 7028), (3012, 6930), (3080, 6777), (3465, 6024), (3514, 5940), (3765, 5544), (3780, 5522), (3960, 5271), (4158, 5020), (4518, 4620)]