20745912320

素因数分解:

$2^{15}\times 5^1\times 7^1\times {\mathrm{18089}}^1$

素因数の和:18131

約数の個数: 128

約数和(自身を含む): 56905351200

約数和(自身を除く): 36159438880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 560, 640, 896, 1024, 1120, 1280, 1792, 2048, 2240, 2560, 3584, 4096, 4480, 5120, 7168, 8192, 8960, 10240, 14336, 16384, 17920, 18089, 20480, 28672, 32768, 35840, 36178, 40960, 57344, 71680, 72356, 81920, 90445, 114688, 126623, 143360, 144712, 163840, 180890, 229376, 253246, 286720, 289424, 361780, 506492, 573440, 578848, 633115, 723560, 1012984, 1146880, 1157696, 1266230, 1447120, 2025968, 2315392, 2532460, 2894240, 4051936, 4630784, 5064920, 5788480, 8103872, 9261568, 10129840, 11576960, 16207744, 18523136, 20259680, 23153920, 32415488, 37046272, 40519360, 46307840, 64830976, 74092544, 81038720, 92615680, 129661952, 148185088, 162077440, 185231360, 259323904, 296370176, 324154880, 370462720, 518647808, 592740352, 648309760, 740925440, 1037295616, 1296619520, 1481850880, 2074591232, 2593239040, 2963701760, 4149182464, 5186478080, 10372956160, 20745912320]

約数ペア:

[(1, 20745912320), (2, 10372956160), (4, 5186478080), (5, 4149182464), (7, 2963701760), (8, 2593239040), (10, 2074591232), (14, 1481850880), (16, 1296619520), (20, 1037295616), (28, 740925440), (32, 648309760), (35, 592740352), (40, 518647808), (56, 370462720), (64, 324154880), (70, 296370176), (80, 259323904), (112, 185231360), (128, 162077440), (140, 148185088), (160, 129661952), (224, 92615680), (256, 81038720), (280, 74092544), (320, 64830976), (448, 46307840), (512, 40519360), (560, 37046272), (640, 32415488), (896, 23153920), (1024, 20259680), (1120, 18523136), (1280, 16207744), (1792, 11576960), (2048, 10129840), (2240, 9261568), (2560, 8103872), (3584, 5788480), (4096, 5064920), (4480, 4630784), (5120, 4051936), (7168, 2894240), (8192, 2532460), (8960, 2315392), (10240, 2025968), (14336, 1447120), (16384, 1266230), (17920, 1157696), (18089, 1146880), (20480, 1012984), (28672, 723560), (32768, 633115), (35840, 578848), (36178, 573440), (40960, 506492), (57344, 361780), (71680, 289424), (72356, 286720), (81920, 253246), (90445, 229376), (114688, 180890), (126623, 163840), (143360, 144712)]