21150720

素因数分解:

$2^{10}\times 3^5\times 5^1\times {\mathrm{17}}^1$

素因数の和:57

約数の個数: 264

約数和(自身を含む): 80471664

約数和(自身を除く): 59320944

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 27, 30, 32, 34, 36, 40, 45, 48, 51, 54, 60, 64, 68, 72, 80, 81, 85, 90, 96, 102, 108, 120, 128, 135, 136, 144, 153, 160, 162, 170, 180, 192, 204, 216, 240, 243, 255, 256, 270, 272, 288, 306, 320, 324, 340, 360, 384, 405, 408, 432, 459, 480, 486, 510, 512, 540, 544, 576, 612, 640, 648, 680, 720, 765, 768, 810, 816, 864, 918, 960, 972, 1020, 1024, 1080, 1088, 1152, 1215, 1224, 1280, 1296, 1360, 1377, 1440, 1530, 1536, 1620, 1632, 1728, 1836, 1920, 1944, 2040, 2160, 2176, 2295, 2304, 2430, 2448, 2560, 2592, 2720, 2754, 2880, 3060, 3072, 3240, 3264, 3456, 3672, 3840, 3888, 4080, 4131, 4320, 4352, 4590, 4608, 4860, 4896, 5120, 5184, 5440, 5508, 5760, 6120, 6480, 6528, 6885, 6912, 7344, 7680, 7776, 8160, 8262, 8640, 8704, 9180, 9216, 9720, 9792, 10368, 10880, 11016, 11520, 12240, 12960, 13056, 13770, 13824, 14688, 15360, 15552, 16320, 16524, 17280, 17408, 18360, 19440, 19584, 20655, 20736, 21760, 22032, 23040, 24480, 25920, 26112, 27540, 27648, 29376, 31104, 32640, 33048, 34560, 36720, 38880, 39168, 41310, 41472, 43520, 44064, 46080, 48960, 51840, 52224, 55080, 58752, 62208, 65280, 66096, 69120, 73440, 77760, 78336, 82620, 82944, 87040, 88128, 97920, 103680, 110160, 117504, 124416, 130560, 132192, 138240, 146880, 155520, 156672, 165240, 176256, 195840, 207360, 220320, 235008, 248832, 261120, 264384, 293760, 311040, 330480, 352512, 391680, 414720, 440640, 470016, 528768, 587520, 622080, 660960, 705024, 783360, 881280, 1057536, 1175040, 1244160, 1321920, 1410048, 1762560, 2115072, 2350080, 2643840, 3525120, 4230144, 5287680, 7050240, 10575360, 21150720]

約数ペア:

[(1, 21150720), (2, 10575360), (3, 7050240), (4, 5287680), (5, 4230144), (6, 3525120), (8, 2643840), (9, 2350080), (10, 2115072), (12, 1762560), (15, 1410048), (16, 1321920), (17, 1244160), (18, 1175040), (20, 1057536), (24, 881280), (27, 783360), (30, 705024), (32, 660960), (34, 622080), (36, 587520), (40, 528768), (45, 470016), (48, 440640), (51, 414720), (54, 391680), (60, 352512), (64, 330480), (68, 311040), (72, 293760), (80, 264384), (81, 261120), (85, 248832), (90, 235008), (96, 220320), (102, 207360), (108, 195840), (120, 176256), (128, 165240), (135, 156672), (136, 155520), (144, 146880), (153, 138240), (160, 132192), (162, 130560), (170, 124416), (180, 117504), (192, 110160), (204, 103680), (216, 97920), (240, 88128), (243, 87040), (255, 82944), (256, 82620), (270, 78336), (272, 77760), (288, 73440), (306, 69120), (320, 66096), (324, 65280), (340, 62208), (360, 58752), (384, 55080), (405, 52224), (408, 51840), (432, 48960), (459, 46080), (480, 44064), (486, 43520), (510, 41472), (512, 41310), (540, 39168), (544, 38880), (576, 36720), (612, 34560), (640, 33048), (648, 32640), (680, 31104), (720, 29376), (765, 27648), (768, 27540), (810, 26112), (816, 25920), (864, 24480), (918, 23040), (960, 22032), (972, 21760), (1020, 20736), (1024, 20655), (1080, 19584), (1088, 19440), (1152, 18360), (1215, 17408), (1224, 17280), (1280, 16524), (1296, 16320), (1360, 15552), (1377, 15360), (1440, 14688), (1530, 13824), (1536, 13770), (1620, 13056), (1632, 12960), (1728, 12240), (1836, 11520), (1920, 11016), (1944, 10880), (2040, 10368), (2160, 9792), (2176, 9720), (2295, 9216), (2304, 9180), (2430, 8704), (2448, 8640), (2560, 8262), (2592, 8160), (2720, 7776), (2754, 7680), (2880, 7344), (3060, 6912), (3072, 6885), (3240, 6528), (3264, 6480), (3456, 6120), (3672, 5760), (3840, 5508), (3888, 5440), (4080, 5184), (4131, 5120), (4320, 4896), (4352, 4860), (4590, 4608)]