28717689

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 52512768

約数和(自身を除く): 23795079

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 73, 77, 91, 131, 143, 219, 231, 273, 393, 429, 511, 803, 917, 949, 1001, 1441, 1533, 1703, 2409, 2751, 2847, 3003, 4323, 5109, 5621, 6643, 9563, 10087, 10439, 11921, 16863, 18733, 19929, 28689, 30261, 31317, 35763, 56199, 66941, 73073, 105193, 124319, 131131, 200823, 219219, 315579, 372957, 393393, 736351, 870233, 1367509, 2209053, 2610699, 4102527, 9572563, 28717689]

約数ペア:

[(1, 28717689), (3, 9572563), (7, 4102527), (11, 2610699), (13, 2209053), (21, 1367509), (33, 870233), (39, 736351), (73, 393393), (77, 372957), (91, 315579), (131, 219219), (143, 200823), (219, 131131), (231, 124319), (273, 105193), (393, 73073), (429, 66941), (511, 56199), (803, 35763), (917, 31317), (949, 30261), (1001, 28689), (1441, 19929), (1533, 18733), (1703, 16863), (2409, 11921), (2751, 10439), (2847, 10087), (3003, 9563), (4323, 6643), (5109, 5621)]