81451440

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{5387}}^1$

素因数の和:5416

約数の個数: 160

約数和(自身を含む): 320693760

約数和(自身を除く): 239242320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1512, 1680, 1890, 2160, 2520, 3024, 3780, 5040, 5387, 7560, 10774, 15120, 16161, 21548, 26935, 32322, 37709, 43096, 48483, 53870, 64644, 75418, 80805, 86192, 96966, 107740, 113127, 129288, 145449, 150836, 161610, 188545, 193932, 215480, 226254, 242415, 258576, 290898, 301672, 323220, 339381, 377090, 387864, 430960, 452508, 484830, 565635, 581796, 603344, 646440, 678762, 727245, 754180, 775728, 905016, 969660, 1018143, 1131270, 1163592, 1292880, 1357524, 1454490, 1508360, 1696905, 1810032, 1939320, 2036286, 2262540, 2327184, 2715048, 2908980, 3016720, 3393810, 3878640, 4072572, 4525080, 5090715, 5430096, 5817960, 6787620, 8145144, 9050160, 10181430, 11635920, 13575240, 16290288, 20362860, 27150480, 40725720, 81451440]

約数ペア:

[(1, 81451440), (2, 40725720), (3, 27150480), (4, 20362860), (5, 16290288), (6, 13575240), (7, 11635920), (8, 10181430), (9, 9050160), (10, 8145144), (12, 6787620), (14, 5817960), (15, 5430096), (16, 5090715), (18, 4525080), (20, 4072572), (21, 3878640), (24, 3393810), (27, 3016720), (28, 2908980), (30, 2715048), (35, 2327184), (36, 2262540), (40, 2036286), (42, 1939320), (45, 1810032), (48, 1696905), (54, 1508360), (56, 1454490), (60, 1357524), (63, 1292880), (70, 1163592), (72, 1131270), (80, 1018143), (84, 969660), (90, 905016), (105, 775728), (108, 754180), (112, 727245), (120, 678762), (126, 646440), (135, 603344), (140, 581796), (144, 565635), (168, 484830), (180, 452508), (189, 430960), (210, 387864), (216, 377090), (240, 339381), (252, 323220), (270, 301672), (280, 290898), (315, 258576), (336, 242415), (360, 226254), (378, 215480), (420, 193932), (432, 188545), (504, 161610), (540, 150836), (560, 145449), (630, 129288), (720, 113127), (756, 107740), (840, 96966), (945, 86192), (1008, 80805), (1080, 75418), (1260, 64644), (1512, 53870), (1680, 48483), (1890, 43096), (2160, 37709), (2520, 32322), (3024, 26935), (3780, 21548), (5040, 16161), (5387, 15120), (7560, 10774)]