81428640

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{587}}^1$

素因数の和:639

約数の個数: 144

約数和(自身を含む): 272940192

約数和(自身を除く): 191511552

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 68, 80, 85, 96, 102, 120, 136, 160, 170, 204, 240, 255, 272, 289, 340, 408, 480, 510, 544, 578, 587, 680, 816, 867, 1020, 1156, 1174, 1360, 1445, 1632, 1734, 1761, 2040, 2312, 2348, 2720, 2890, 2935, 3468, 3522, 4080, 4335, 4624, 4696, 5780, 5870, 6936, 7044, 8160, 8670, 8805, 9248, 9392, 9979, 11560, 11740, 13872, 14088, 17340, 17610, 18784, 19958, 23120, 23480, 27744, 28176, 29937, 34680, 35220, 39916, 46240, 46960, 49895, 56352, 59874, 69360, 70440, 79832, 93920, 99790, 119748, 138720, 140880, 149685, 159664, 169643, 199580, 239496, 281760, 299370, 319328, 339286, 399160, 478992, 508929, 598740, 678572, 798320, 848215, 957984, 1017858, 1197480, 1357144, 1596640, 1696430, 2035716, 2394960, 2544645, 2714288, 3392860, 4071432, 4789920, 5089290, 5428576, 6785720, 8142864, 10178580, 13571440, 16285728, 20357160, 27142880, 40714320, 81428640]

約数ペア:

[(1, 81428640), (2, 40714320), (3, 27142880), (4, 20357160), (5, 16285728), (6, 13571440), (8, 10178580), (10, 8142864), (12, 6785720), (15, 5428576), (16, 5089290), (17, 4789920), (20, 4071432), (24, 3392860), (30, 2714288), (32, 2544645), (34, 2394960), (40, 2035716), (48, 1696430), (51, 1596640), (60, 1357144), (68, 1197480), (80, 1017858), (85, 957984), (96, 848215), (102, 798320), (120, 678572), (136, 598740), (160, 508929), (170, 478992), (204, 399160), (240, 339286), (255, 319328), (272, 299370), (289, 281760), (340, 239496), (408, 199580), (480, 169643), (510, 159664), (544, 149685), (578, 140880), (587, 138720), (680, 119748), (816, 99790), (867, 93920), (1020, 79832), (1156, 70440), (1174, 69360), (1360, 59874), (1445, 56352), (1632, 49895), (1734, 46960), (1761, 46240), (2040, 39916), (2312, 35220), (2348, 34680), (2720, 29937), (2890, 28176), (2935, 27744), (3468, 23480), (3522, 23120), (4080, 19958), (4335, 18784), (4624, 17610), (4696, 17340), (5780, 14088), (5870, 13872), (6936, 11740), (7044, 11560), (8160, 9979), (8670, 9392), (8805, 9248)]