81745920

素因数分解:

$2^{11}\times 3^2\times 5^1\times {\mathrm{887}}^1$

素因数の和:920

約数の個数: 144

約数和(自身を含む): 283636080

約数和(自身を除く): 201890160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 512, 576, 640, 720, 768, 887, 960, 1024, 1152, 1280, 1440, 1536, 1774, 1920, 2048, 2304, 2560, 2661, 2880, 3072, 3548, 3840, 4435, 4608, 5120, 5322, 5760, 6144, 7096, 7680, 7983, 8870, 9216, 10240, 10644, 11520, 13305, 14192, 15360, 15966, 17740, 18432, 21288, 23040, 26610, 28384, 30720, 31932, 35480, 39915, 42576, 46080, 53220, 56768, 63864, 70960, 79830, 85152, 92160, 106440, 113536, 127728, 141920, 159660, 170304, 212880, 227072, 255456, 283840, 319320, 340608, 425760, 454144, 510912, 567680, 638640, 681216, 851520, 908288, 1021824, 1135360, 1277280, 1362432, 1703040, 1816576, 2043648, 2270720, 2554560, 2724864, 3406080, 4087296, 4541440, 5109120, 5449728, 6812160, 8174592, 9082880, 10218240, 13624320, 16349184, 20436480, 27248640, 40872960, 81745920]

約数ペア:

[(1, 81745920), (2, 40872960), (3, 27248640), (4, 20436480), (5, 16349184), (6, 13624320), (8, 10218240), (9, 9082880), (10, 8174592), (12, 6812160), (15, 5449728), (16, 5109120), (18, 4541440), (20, 4087296), (24, 3406080), (30, 2724864), (32, 2554560), (36, 2270720), (40, 2043648), (45, 1816576), (48, 1703040), (60, 1362432), (64, 1277280), (72, 1135360), (80, 1021824), (90, 908288), (96, 851520), (120, 681216), (128, 638640), (144, 567680), (160, 510912), (180, 454144), (192, 425760), (240, 340608), (256, 319320), (288, 283840), (320, 255456), (360, 227072), (384, 212880), (480, 170304), (512, 159660), (576, 141920), (640, 127728), (720, 113536), (768, 106440), (887, 92160), (960, 85152), (1024, 79830), (1152, 70960), (1280, 63864), (1440, 56768), (1536, 53220), (1774, 46080), (1920, 42576), (2048, 39915), (2304, 35480), (2560, 31932), (2661, 30720), (2880, 28384), (3072, 26610), (3548, 23040), (3840, 21288), (4435, 18432), (4608, 17740), (5120, 15966), (5322, 15360), (5760, 14192), (6144, 13305), (7096, 11520), (7680, 10644), (7983, 10240), (8870, 9216)]