28009080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{643}}^1$

素因数の和:682

約数の個数: 144

約数和(自身を含む): 100212840

約数和(自身を除く): 72203760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 121, 132, 165, 180, 198, 220, 242, 264, 330, 360, 363, 396, 440, 484, 495, 605, 643, 660, 726, 792, 968, 990, 1089, 1210, 1286, 1320, 1452, 1815, 1929, 1980, 2178, 2420, 2572, 2904, 3215, 3630, 3858, 3960, 4356, 4840, 5144, 5445, 5787, 6430, 7073, 7260, 7716, 8712, 9645, 10890, 11574, 12860, 14146, 14520, 15432, 19290, 21219, 21780, 23148, 25720, 28292, 28935, 35365, 38580, 42438, 43560, 46296, 56584, 57870, 63657, 70730, 77160, 77803, 84876, 106095, 115740, 127314, 141460, 155606, 169752, 212190, 231480, 233409, 254628, 282920, 311212, 318285, 389015, 424380, 466818, 509256, 622424, 636570, 700227, 778030, 848760, 933636, 1167045, 1273140, 1400454, 1556060, 1867272, 2334090, 2546280, 2800908, 3112120, 3501135, 4668180, 5601816, 7002270, 9336360, 14004540, 28009080]

約数ペア:

[(1, 28009080), (2, 14004540), (3, 9336360), (4, 7002270), (5, 5601816), (6, 4668180), (8, 3501135), (9, 3112120), (10, 2800908), (11, 2546280), (12, 2334090), (15, 1867272), (18, 1556060), (20, 1400454), (22, 1273140), (24, 1167045), (30, 933636), (33, 848760), (36, 778030), (40, 700227), (44, 636570), (45, 622424), (55, 509256), (60, 466818), (66, 424380), (72, 389015), (88, 318285), (90, 311212), (99, 282920), (110, 254628), (120, 233409), (121, 231480), (132, 212190), (165, 169752), (180, 155606), (198, 141460), (220, 127314), (242, 115740), (264, 106095), (330, 84876), (360, 77803), (363, 77160), (396, 70730), (440, 63657), (484, 57870), (495, 56584), (605, 46296), (643, 43560), (660, 42438), (726, 38580), (792, 35365), (968, 28935), (990, 28292), (1089, 25720), (1210, 23148), (1286, 21780), (1320, 21219), (1452, 19290), (1815, 15432), (1929, 14520), (1980, 14146), (2178, 12860), (2420, 11574), (2572, 10890), (2904, 9645), (3215, 8712), (3630, 7716), (3858, 7260), (3960, 7073), (4356, 6430), (4840, 5787), (5144, 5445)]