81131520

素因数分解:

$2^{11}\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:188

約数の個数: 192

約数和(自身を含む): 275184000

約数和(自身を除く): 194052480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 64, 76, 80, 95, 96, 114, 120, 128, 139, 152, 160, 190, 192, 228, 240, 256, 278, 285, 304, 320, 380, 384, 417, 456, 480, 512, 556, 570, 608, 640, 695, 760, 768, 834, 912, 960, 1024, 1112, 1140, 1216, 1280, 1390, 1520, 1536, 1668, 1824, 1920, 2048, 2085, 2224, 2280, 2432, 2560, 2641, 2780, 3040, 3072, 3336, 3648, 3840, 4170, 4448, 4560, 4864, 5120, 5282, 5560, 6080, 6144, 6672, 7296, 7680, 7923, 8340, 8896, 9120, 9728, 10240, 10564, 11120, 12160, 13205, 13344, 14592, 15360, 15846, 16680, 17792, 18240, 19456, 21128, 22240, 24320, 26410, 26688, 29184, 30720, 31692, 33360, 35584, 36480, 38912, 39615, 42256, 44480, 48640, 52820, 53376, 58368, 63384, 66720, 71168, 72960, 79230, 84512, 88960, 97280, 105640, 106752, 116736, 126768, 133440, 142336, 145920, 158460, 169024, 177920, 194560, 211280, 213504, 253536, 266880, 284672, 291840, 316920, 338048, 355840, 422560, 427008, 507072, 533760, 583680, 633840, 676096, 711680, 845120, 854016, 1014144, 1067520, 1267680, 1352192, 1423360, 1690240, 2028288, 2135040, 2535360, 2704384, 3380480, 4056576, 4270080, 5070720, 5408768, 6760960, 8113152, 10141440, 13521920, 16226304, 20282880, 27043840, 40565760, 81131520]

約数ペア:

[(1, 81131520), (2, 40565760), (3, 27043840), (4, 20282880), (5, 16226304), (6, 13521920), (8, 10141440), (10, 8113152), (12, 6760960), (15, 5408768), (16, 5070720), (19, 4270080), (20, 4056576), (24, 3380480), (30, 2704384), (32, 2535360), (38, 2135040), (40, 2028288), (48, 1690240), (57, 1423360), (60, 1352192), (64, 1267680), (76, 1067520), (80, 1014144), (95, 854016), (96, 845120), (114, 711680), (120, 676096), (128, 633840), (139, 583680), (152, 533760), (160, 507072), (190, 427008), (192, 422560), (228, 355840), (240, 338048), (256, 316920), (278, 291840), (285, 284672), (304, 266880), (320, 253536), (380, 213504), (384, 211280), (417, 194560), (456, 177920), (480, 169024), (512, 158460), (556, 145920), (570, 142336), (608, 133440), (640, 126768), (695, 116736), (760, 106752), (768, 105640), (834, 97280), (912, 88960), (960, 84512), (1024, 79230), (1112, 72960), (1140, 71168), (1216, 66720), (1280, 63384), (1390, 58368), (1520, 53376), (1536, 52820), (1668, 48640), (1824, 44480), (1920, 42256), (2048, 39615), (2085, 38912), (2224, 36480), (2280, 35584), (2432, 33360), (2560, 31692), (2641, 30720), (2780, 29184), (3040, 26688), (3072, 26410), (3336, 24320), (3648, 22240), (3840, 21128), (4170, 19456), (4448, 18240), (4560, 17792), (4864, 16680), (5120, 15846), (5282, 15360), (5560, 14592), (6080, 13344), (6144, 13205), (6672, 12160), (7296, 11120), (7680, 10564), (7923, 10240), (8340, 9728), (8896, 9120)]