21012480

素因数分解:

$2^{13}\times 3^3\times 5^1\times {\mathrm{19}}^1$

素因数の和:59

約数の個数: 224

約数和(自身を含む): 78638400

約数和(自身を除く): 57625920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 32, 36, 38, 40, 45, 48, 54, 57, 60, 64, 72, 76, 80, 90, 95, 96, 108, 114, 120, 128, 135, 144, 152, 160, 171, 180, 190, 192, 216, 228, 240, 256, 270, 285, 288, 304, 320, 342, 360, 380, 384, 432, 456, 480, 512, 513, 540, 570, 576, 608, 640, 684, 720, 760, 768, 855, 864, 912, 960, 1024, 1026, 1080, 1140, 1152, 1216, 1280, 1368, 1440, 1520, 1536, 1710, 1728, 1824, 1920, 2048, 2052, 2160, 2280, 2304, 2432, 2560, 2565, 2736, 2880, 3040, 3072, 3420, 3456, 3648, 3840, 4096, 4104, 4320, 4560, 4608, 4864, 5120, 5130, 5472, 5760, 6080, 6144, 6840, 6912, 7296, 7680, 8192, 8208, 8640, 9120, 9216, 9728, 10240, 10260, 10944, 11520, 12160, 12288, 13680, 13824, 14592, 15360, 16416, 17280, 18240, 18432, 19456, 20480, 20520, 21888, 23040, 24320, 24576, 27360, 27648, 29184, 30720, 32832, 34560, 36480, 36864, 38912, 40960, 41040, 43776, 46080, 48640, 54720, 55296, 58368, 61440, 65664, 69120, 72960, 73728, 77824, 82080, 87552, 92160, 97280, 109440, 110592, 116736, 122880, 131328, 138240, 145920, 155648, 164160, 175104, 184320, 194560, 218880, 221184, 233472, 262656, 276480, 291840, 328320, 350208, 368640, 389120, 437760, 466944, 525312, 552960, 583680, 656640, 700416, 778240, 875520, 1050624, 1105920, 1167360, 1313280, 1400832, 1751040, 2101248, 2334720, 2626560, 3502080, 4202496, 5253120, 7004160, 10506240, 21012480]

約数ペア:

[(1, 21012480), (2, 10506240), (3, 7004160), (4, 5253120), (5, 4202496), (6, 3502080), (8, 2626560), (9, 2334720), (10, 2101248), (12, 1751040), (15, 1400832), (16, 1313280), (18, 1167360), (19, 1105920), (20, 1050624), (24, 875520), (27, 778240), (30, 700416), (32, 656640), (36, 583680), (38, 552960), (40, 525312), (45, 466944), (48, 437760), (54, 389120), (57, 368640), (60, 350208), (64, 328320), (72, 291840), (76, 276480), (80, 262656), (90, 233472), (95, 221184), (96, 218880), (108, 194560), (114, 184320), (120, 175104), (128, 164160), (135, 155648), (144, 145920), (152, 138240), (160, 131328), (171, 122880), (180, 116736), (190, 110592), (192, 109440), (216, 97280), (228, 92160), (240, 87552), (256, 82080), (270, 77824), (285, 73728), (288, 72960), (304, 69120), (320, 65664), (342, 61440), (360, 58368), (380, 55296), (384, 54720), (432, 48640), (456, 46080), (480, 43776), (512, 41040), (513, 40960), (540, 38912), (570, 36864), (576, 36480), (608, 34560), (640, 32832), (684, 30720), (720, 29184), (760, 27648), (768, 27360), (855, 24576), (864, 24320), (912, 23040), (960, 21888), (1024, 20520), (1026, 20480), (1080, 19456), (1140, 18432), (1152, 18240), (1216, 17280), (1280, 16416), (1368, 15360), (1440, 14592), (1520, 13824), (1536, 13680), (1710, 12288), (1728, 12160), (1824, 11520), (1920, 10944), (2048, 10260), (2052, 10240), (2160, 9728), (2280, 9216), (2304, 9120), (2432, 8640), (2560, 8208), (2565, 8192), (2736, 7680), (2880, 7296), (3040, 6912), (3072, 6840), (3420, 6144), (3456, 6080), (3648, 5760), (3840, 5472), (4096, 5130), (4104, 5120), (4320, 4864), (4560, 4608)]