21557760

素因数分解:

$2^9\times 3^1\times 5^1\times 7^1\times {\mathrm{401}}^1$

素因数の和:434

約数の個数: 160

約数和(自身を含む): 78959232

約数和(自身を除く): 57401472

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 256, 280, 320, 336, 384, 401, 420, 448, 480, 512, 560, 640, 672, 768, 802, 840, 896, 960, 1120, 1203, 1280, 1344, 1536, 1604, 1680, 1792, 1920, 2005, 2240, 2406, 2560, 2688, 2807, 3208, 3360, 3584, 3840, 4010, 4480, 4812, 5376, 5614, 6015, 6416, 6720, 7680, 8020, 8421, 8960, 9624, 10752, 11228, 12030, 12832, 13440, 14035, 16040, 16842, 17920, 19248, 22456, 24060, 25664, 26880, 28070, 32080, 33684, 38496, 42105, 44912, 48120, 51328, 53760, 56140, 64160, 67368, 76992, 84210, 89824, 96240, 102656, 112280, 128320, 134736, 153984, 168420, 179648, 192480, 205312, 224560, 256640, 269472, 307968, 336840, 359296, 384960, 449120, 513280, 538944, 615936, 673680, 718592, 769920, 898240, 1026560, 1077888, 1347360, 1437184, 1539840, 1796480, 2155776, 2694720, 3079680, 3592960, 4311552, 5389440, 7185920, 10778880, 21557760]

約数ペア:

[(1, 21557760), (2, 10778880), (3, 7185920), (4, 5389440), (5, 4311552), (6, 3592960), (7, 3079680), (8, 2694720), (10, 2155776), (12, 1796480), (14, 1539840), (15, 1437184), (16, 1347360), (20, 1077888), (21, 1026560), (24, 898240), (28, 769920), (30, 718592), (32, 673680), (35, 615936), (40, 538944), (42, 513280), (48, 449120), (56, 384960), (60, 359296), (64, 336840), (70, 307968), (80, 269472), (84, 256640), (96, 224560), (105, 205312), (112, 192480), (120, 179648), (128, 168420), (140, 153984), (160, 134736), (168, 128320), (192, 112280), (210, 102656), (224, 96240), (240, 89824), (256, 84210), (280, 76992), (320, 67368), (336, 64160), (384, 56140), (401, 53760), (420, 51328), (448, 48120), (480, 44912), (512, 42105), (560, 38496), (640, 33684), (672, 32080), (768, 28070), (802, 26880), (840, 25664), (896, 24060), (960, 22456), (1120, 19248), (1203, 17920), (1280, 16842), (1344, 16040), (1536, 14035), (1604, 13440), (1680, 12832), (1792, 12030), (1920, 11228), (2005, 10752), (2240, 9624), (2406, 8960), (2560, 8421), (2688, 8020), (2807, 7680), (3208, 6720), (3360, 6416), (3584, 6015), (3840, 5614), (4010, 5376), (4480, 4812)]