81523840

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:222

約数の個数: 128

約数和(自身を含む): 211507200

約数和(自身を除く): 129983360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 59, 64, 68, 80, 85, 118, 127, 128, 136, 160, 170, 236, 254, 272, 295, 320, 340, 472, 508, 544, 590, 635, 640, 680, 944, 1003, 1016, 1088, 1180, 1270, 1360, 1888, 2006, 2032, 2159, 2176, 2360, 2540, 2720, 3776, 4012, 4064, 4318, 4720, 5015, 5080, 5440, 7493, 7552, 8024, 8128, 8636, 9440, 10030, 10160, 10795, 10880, 14986, 16048, 16256, 17272, 18880, 20060, 20320, 21590, 29972, 32096, 34544, 37465, 37760, 40120, 40640, 43180, 59944, 64192, 69088, 74930, 80240, 81280, 86360, 119888, 127381, 128384, 138176, 149860, 160480, 172720, 239776, 254762, 276352, 299720, 320960, 345440, 479552, 509524, 599440, 636905, 641920, 690880, 959104, 1019048, 1198880, 1273810, 1381760, 2038096, 2397760, 2547620, 4076192, 4795520, 5095240, 8152384, 10190480, 16304768, 20380960, 40761920, 81523840]

約数ペア:

[(1, 81523840), (2, 40761920), (4, 20380960), (5, 16304768), (8, 10190480), (10, 8152384), (16, 5095240), (17, 4795520), (20, 4076192), (32, 2547620), (34, 2397760), (40, 2038096), (59, 1381760), (64, 1273810), (68, 1198880), (80, 1019048), (85, 959104), (118, 690880), (127, 641920), (128, 636905), (136, 599440), (160, 509524), (170, 479552), (236, 345440), (254, 320960), (272, 299720), (295, 276352), (320, 254762), (340, 239776), (472, 172720), (508, 160480), (544, 149860), (590, 138176), (635, 128384), (640, 127381), (680, 119888), (944, 86360), (1003, 81280), (1016, 80240), (1088, 74930), (1180, 69088), (1270, 64192), (1360, 59944), (1888, 43180), (2006, 40640), (2032, 40120), (2159, 37760), (2176, 37465), (2360, 34544), (2540, 32096), (2720, 29972), (3776, 21590), (4012, 20320), (4064, 20060), (4318, 18880), (4720, 17272), (5015, 16256), (5080, 16048), (5440, 14986), (7493, 10880), (7552, 10795), (8024, 10160), (8128, 10030), (8636, 9440)]