28857840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{643}}^1$

素因数の和:687

約数の個数: 160

約数和(自身を含む): 103493376

約数和(自身を除く): 74635536

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 17, 20, 22, 24, 30, 33, 34, 40, 44, 48, 51, 55, 60, 66, 68, 80, 85, 88, 102, 110, 120, 132, 136, 165, 170, 176, 187, 204, 220, 240, 255, 264, 272, 330, 340, 374, 408, 440, 510, 528, 561, 643, 660, 680, 748, 816, 880, 935, 1020, 1122, 1286, 1320, 1360, 1496, 1870, 1929, 2040, 2244, 2572, 2640, 2805, 2992, 3215, 3740, 3858, 4080, 4488, 5144, 5610, 6430, 7073, 7480, 7716, 8976, 9645, 10288, 10931, 11220, 12860, 14146, 14960, 15432, 19290, 21219, 21862, 22440, 25720, 28292, 30864, 32793, 35365, 38580, 42438, 43724, 44880, 51440, 54655, 56584, 65586, 70730, 77160, 84876, 87448, 106095, 109310, 113168, 120241, 131172, 141460, 154320, 163965, 169752, 174896, 212190, 218620, 240482, 262344, 282920, 327930, 339504, 360723, 424380, 437240, 480964, 524688, 565840, 601205, 655860, 721446, 848760, 874480, 961928, 1202410, 1311720, 1442892, 1697520, 1803615, 1923856, 2404820, 2623440, 2885784, 3607230, 4809640, 5771568, 7214460, 9619280, 14428920, 28857840]

約数ペア:

[(1, 28857840), (2, 14428920), (3, 9619280), (4, 7214460), (5, 5771568), (6, 4809640), (8, 3607230), (10, 2885784), (11, 2623440), (12, 2404820), (15, 1923856), (16, 1803615), (17, 1697520), (20, 1442892), (22, 1311720), (24, 1202410), (30, 961928), (33, 874480), (34, 848760), (40, 721446), (44, 655860), (48, 601205), (51, 565840), (55, 524688), (60, 480964), (66, 437240), (68, 424380), (80, 360723), (85, 339504), (88, 327930), (102, 282920), (110, 262344), (120, 240482), (132, 218620), (136, 212190), (165, 174896), (170, 169752), (176, 163965), (187, 154320), (204, 141460), (220, 131172), (240, 120241), (255, 113168), (264, 109310), (272, 106095), (330, 87448), (340, 84876), (374, 77160), (408, 70730), (440, 65586), (510, 56584), (528, 54655), (561, 51440), (643, 44880), (660, 43724), (680, 42438), (748, 38580), (816, 35365), (880, 32793), (935, 30864), (1020, 28292), (1122, 25720), (1286, 22440), (1320, 21862), (1360, 21219), (1496, 19290), (1870, 15432), (1929, 14960), (2040, 14146), (2244, 12860), (2572, 11220), (2640, 10931), (2805, 10288), (2992, 9645), (3215, 8976), (3740, 7716), (3858, 7480), (4080, 7073), (4488, 6430), (5144, 5610)]