20996010

素因数分解:

$2^1\times 3^4\times 5^1\times 7^2\times {\mathrm{23}}^2$

素因数の和:79

約数の個数: 180

約数和(自身を含む): 68652738

約数和(自身を除く): 47656728

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 23, 27, 30, 35, 42, 45, 46, 49, 54, 63, 69, 70, 81, 90, 98, 105, 115, 126, 135, 138, 147, 161, 162, 189, 207, 210, 230, 245, 270, 294, 315, 322, 345, 378, 405, 414, 441, 483, 490, 529, 567, 621, 630, 690, 735, 805, 810, 882, 945, 966, 1035, 1058, 1127, 1134, 1242, 1323, 1449, 1470, 1587, 1610, 1863, 1890, 2070, 2205, 2254, 2415, 2645, 2646, 2835, 2898, 3105, 3174, 3381, 3703, 3726, 3969, 4347, 4410, 4761, 4830, 5290, 5635, 5670, 6210, 6615, 6762, 7245, 7406, 7935, 7938, 8694, 9315, 9522, 10143, 11109, 11270, 13041, 13230, 14283, 14490, 15870, 16905, 18515, 18630, 19845, 20286, 21735, 22218, 23805, 25921, 26082, 28566, 30429, 33327, 33810, 37030, 39690, 42849, 43470, 47610, 50715, 51842, 55545, 60858, 65205, 66654, 71415, 77763, 85698, 91287, 99981, 101430, 111090, 129605, 130410, 142830, 152145, 155526, 166635, 182574, 199962, 214245, 233289, 259210, 299943, 304290, 333270, 388815, 428490, 456435, 466578, 499905, 599886, 699867, 777630, 912870, 999810, 1166445, 1399734, 1499715, 2099601, 2332890, 2999430, 3499335, 4199202, 6998670, 10498005, 20996010]

約数ペア:

[(1, 20996010), (2, 10498005), (3, 6998670), (5, 4199202), (6, 3499335), (7, 2999430), (9, 2332890), (10, 2099601), (14, 1499715), (15, 1399734), (18, 1166445), (21, 999810), (23, 912870), (27, 777630), (30, 699867), (35, 599886), (42, 499905), (45, 466578), (46, 456435), (49, 428490), (54, 388815), (63, 333270), (69, 304290), (70, 299943), (81, 259210), (90, 233289), (98, 214245), (105, 199962), (115, 182574), (126, 166635), (135, 155526), (138, 152145), (147, 142830), (161, 130410), (162, 129605), (189, 111090), (207, 101430), (210, 99981), (230, 91287), (245, 85698), (270, 77763), (294, 71415), (315, 66654), (322, 65205), (345, 60858), (378, 55545), (405, 51842), (414, 50715), (441, 47610), (483, 43470), (490, 42849), (529, 39690), (567, 37030), (621, 33810), (630, 33327), (690, 30429), (735, 28566), (805, 26082), (810, 25921), (882, 23805), (945, 22218), (966, 21735), (1035, 20286), (1058, 19845), (1127, 18630), (1134, 18515), (1242, 16905), (1323, 15870), (1449, 14490), (1470, 14283), (1587, 13230), (1610, 13041), (1863, 11270), (1890, 11109), (2070, 10143), (2205, 9522), (2254, 9315), (2415, 8694), (2645, 7938), (2646, 7935), (2835, 7406), (2898, 7245), (3105, 6762), (3174, 6615), (3381, 6210), (3703, 5670), (3726, 5635), (3969, 5290), (4347, 4830), (4410, 4761)]