21191520

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:102

約数の個数: 288

約数和(自身を含む): 83770848

約数和(自身を除く): 62579328

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 32, 34, 35, 40, 42, 48, 49, 51, 53, 56, 60, 68, 70, 80, 84, 85, 96, 98, 102, 105, 106, 112, 119, 120, 136, 140, 147, 159, 160, 168, 170, 196, 204, 210, 212, 224, 238, 240, 245, 255, 265, 272, 280, 294, 318, 336, 340, 357, 371, 392, 408, 420, 424, 476, 480, 490, 510, 530, 544, 560, 588, 595, 636, 672, 680, 714, 735, 742, 784, 795, 816, 833, 840, 848, 901, 952, 980, 1020, 1060, 1113, 1120, 1176, 1190, 1272, 1360, 1428, 1470, 1484, 1568, 1590, 1632, 1666, 1680, 1696, 1785, 1802, 1855, 1904, 1960, 2040, 2120, 2226, 2352, 2380, 2499, 2544, 2597, 2703, 2720, 2856, 2940, 2968, 3180, 3332, 3360, 3570, 3604, 3710, 3808, 3920, 4080, 4165, 4240, 4452, 4505, 4704, 4760, 4998, 5088, 5194, 5406, 5565, 5712, 5880, 5936, 6307, 6360, 6664, 7140, 7208, 7420, 7791, 7840, 8160, 8330, 8480, 8904, 9010, 9520, 9996, 10388, 10812, 11130, 11424, 11760, 11872, 12495, 12614, 12720, 12985, 13328, 13515, 14280, 14416, 14840, 15582, 16660, 17808, 18020, 18921, 19040, 19992, 20776, 21624, 22260, 23520, 24990, 25228, 25440, 25970, 26656, 27030, 28560, 28832, 29680, 31164, 31535, 33320, 35616, 36040, 37842, 38955, 39984, 41552, 43248, 44149, 44520, 49980, 50456, 51940, 54060, 57120, 59360, 62328, 63070, 66640, 72080, 75684, 77910, 79968, 83104, 86496, 88298, 89040, 94605, 99960, 100912, 103880, 108120, 124656, 126140, 132447, 133280, 144160, 151368, 155820, 176596, 178080, 189210, 199920, 201824, 207760, 216240, 220745, 249312, 252280, 264894, 302736, 311640, 353192, 378420, 399840, 415520, 432480, 441490, 504560, 529788, 605472, 623280, 662235, 706384, 756840, 882980, 1009120, 1059576, 1246560, 1324470, 1412768, 1513680, 1765960, 2119152, 2648940, 3027360, 3531920, 4238304, 5297880, 7063840, 10595760, 21191520]

約数ペア:

[(1, 21191520), (2, 10595760), (3, 7063840), (4, 5297880), (5, 4238304), (6, 3531920), (7, 3027360), (8, 2648940), (10, 2119152), (12, 1765960), (14, 1513680), (15, 1412768), (16, 1324470), (17, 1246560), (20, 1059576), (21, 1009120), (24, 882980), (28, 756840), (30, 706384), (32, 662235), (34, 623280), (35, 605472), (40, 529788), (42, 504560), (48, 441490), (49, 432480), (51, 415520), (53, 399840), (56, 378420), (60, 353192), (68, 311640), (70, 302736), (80, 264894), (84, 252280), (85, 249312), (96, 220745), (98, 216240), (102, 207760), (105, 201824), (106, 199920), (112, 189210), (119, 178080), (120, 176596), (136, 155820), (140, 151368), (147, 144160), (159, 133280), (160, 132447), (168, 126140), (170, 124656), (196, 108120), (204, 103880), (210, 100912), (212, 99960), (224, 94605), (238, 89040), (240, 88298), (245, 86496), (255, 83104), (265, 79968), (272, 77910), (280, 75684), (294, 72080), (318, 66640), (336, 63070), (340, 62328), (357, 59360), (371, 57120), (392, 54060), (408, 51940), (420, 50456), (424, 49980), (476, 44520), (480, 44149), (490, 43248), (510, 41552), (530, 39984), (544, 38955), (560, 37842), (588, 36040), (595, 35616), (636, 33320), (672, 31535), (680, 31164), (714, 29680), (735, 28832), (742, 28560), (784, 27030), (795, 26656), (816, 25970), (833, 25440), (840, 25228), (848, 24990), (901, 23520), (952, 22260), (980, 21624), (1020, 20776), (1060, 19992), (1113, 19040), (1120, 18921), (1176, 18020), (1190, 17808), (1272, 16660), (1360, 15582), (1428, 14840), (1470, 14416), (1484, 14280), (1568, 13515), (1590, 13328), (1632, 12985), (1666, 12720), (1680, 12614), (1696, 12495), (1785, 11872), (1802, 11760), (1855, 11424), (1904, 11130), (1960, 10812), (2040, 10388), (2120, 9996), (2226, 9520), (2352, 9010), (2380, 8904), (2499, 8480), (2544, 8330), (2597, 8160), (2703, 7840), (2720, 7791), (2856, 7420), (2940, 7208), (2968, 7140), (3180, 6664), (3332, 6360), (3360, 6307), (3570, 5936), (3604, 5880), (3710, 5712), (3808, 5565), (3920, 5406), (4080, 5194), (4165, 5088), (4240, 4998), (4452, 4760), (4505, 4704)]