400081920

素因数分解:

$2^{10}\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^2$

素因数の和:157

約数の個数: 264

約数和(自身を含む): 1486809792

約数和(自身を除く): 1086727872

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, 61, 64, 70, 80, 84, 96, 105, 112, 120, 122, 128, 140, 160, 168, 183, 192, 210, 224, 240, 244, 256, 280, 305, 320, 336, 366, 384, 420, 427, 448, 480, 488, 512, 560, 610, 640, 672, 732, 768, 840, 854, 896, 915, 960, 976, 1024, 1120, 1220, 1280, 1281, 1344, 1464, 1536, 1680, 1708, 1792, 1830, 1920, 1952, 2135, 2240, 2440, 2560, 2562, 2688, 2928, 3072, 3360, 3416, 3584, 3660, 3721, 3840, 3904, 4270, 4480, 4880, 5120, 5124, 5376, 5856, 6405, 6720, 6832, 7168, 7320, 7442, 7680, 7808, 8540, 8960, 9760, 10248, 10752, 11163, 11712, 12810, 13440, 13664, 14640, 14884, 15360, 15616, 17080, 17920, 18605, 19520, 20496, 21504, 22326, 23424, 25620, 26047, 26880, 27328, 29280, 29768, 31232, 34160, 35840, 37210, 39040, 40992, 44652, 46848, 51240, 52094, 53760, 54656, 55815, 58560, 59536, 62464, 68320, 74420, 78080, 78141, 81984, 89304, 93696, 102480, 104188, 107520, 109312, 111630, 117120, 119072, 130235, 136640, 148840, 156160, 156282, 163968, 178608, 187392, 204960, 208376, 218624, 223260, 234240, 238144, 260470, 273280, 297680, 312320, 312564, 327936, 357216, 390705, 409920, 416752, 437248, 446520, 468480, 476288, 520940, 546560, 595360, 625128, 655872, 714432, 781410, 819840, 833504, 893040, 936960, 952576, 1041880, 1093120, 1190720, 1250256, 1311744, 1428864, 1562820, 1639680, 1667008, 1786080, 1905152, 2083760, 2186240, 2381440, 2500512, 2857728, 3125640, 3279360, 3334016, 3572160, 3810304, 4167520, 4762880, 5001024, 5715456, 6251280, 6558720, 6668032, 7144320, 8335040, 9525760, 10002048, 11430912, 12502560, 13336064, 14288640, 16670080, 19051520, 20004096, 25005120, 26672128, 28577280, 33340160, 40008192, 50010240, 57154560, 66680320, 80016384, 100020480, 133360640, 200040960, 400081920]

約数ペア:

[(1, 400081920), (2, 200040960), (3, 133360640), (4, 100020480), (5, 80016384), (6, 66680320), (7, 57154560), (8, 50010240), (10, 40008192), (12, 33340160), (14, 28577280), (15, 26672128), (16, 25005120), (20, 20004096), (21, 19051520), (24, 16670080), (28, 14288640), (30, 13336064), (32, 12502560), (35, 11430912), (40, 10002048), (42, 9525760), (48, 8335040), (56, 7144320), (60, 6668032), (61, 6558720), (64, 6251280), (70, 5715456), (80, 5001024), (84, 4762880), (96, 4167520), (105, 3810304), (112, 3572160), (120, 3334016), (122, 3279360), (128, 3125640), (140, 2857728), (160, 2500512), (168, 2381440), (183, 2186240), (192, 2083760), (210, 1905152), (224, 1786080), (240, 1667008), (244, 1639680), (256, 1562820), (280, 1428864), (305, 1311744), (320, 1250256), (336, 1190720), (366, 1093120), (384, 1041880), (420, 952576), (427, 936960), (448, 893040), (480, 833504), (488, 819840), (512, 781410), (560, 714432), (610, 655872), (640, 625128), (672, 595360), (732, 546560), (768, 520940), (840, 476288), (854, 468480), (896, 446520), (915, 437248), (960, 416752), (976, 409920), (1024, 390705), (1120, 357216), (1220, 327936), (1280, 312564), (1281, 312320), (1344, 297680), (1464, 273280), (1536, 260470), (1680, 238144), (1708, 234240), (1792, 223260), (1830, 218624), (1920, 208376), (1952, 204960), (2135, 187392), (2240, 178608), (2440, 163968), (2560, 156282), (2562, 156160), (2688, 148840), (2928, 136640), (3072, 130235), (3360, 119072), (3416, 117120), (3584, 111630), (3660, 109312), (3721, 107520), (3840, 104188), (3904, 102480), (4270, 93696), (4480, 89304), (4880, 81984), (5120, 78141), (5124, 78080), (5376, 74420), (5856, 68320), (6405, 62464), (6720, 59536), (6832, 58560), (7168, 55815), (7320, 54656), (7442, 53760), (7680, 52094), (7808, 51240), (8540, 46848), (8960, 44652), (9760, 40992), (10248, 39040), (10752, 37210), (11163, 35840), (11712, 34160), (12810, 31232), (13440, 29768), (13664, 29280), (14640, 27328), (14884, 26880), (15360, 26047), (15616, 25620), (17080, 23424), (17920, 22326), (18605, 21504), (19520, 20496)]