81186658

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 153872640

約数和(自身を除く): 72685982

約数列:

[1, 2, 7, 14, 19, 37, 38, 73, 74, 113, 133, 146, 226, 259, 266, 511, 518, 703, 791, 1022, 1387, 1406, 1582, 2147, 2701, 2774, 4181, 4294, 4921, 5402, 8249, 8362, 9709, 9842, 15029, 16498, 18907, 19418, 29267, 30058, 37814, 51319, 57743, 58534, 79439, 102638, 115486, 156731, 158878, 305213, 313462, 359233, 556073, 610426, 718466, 1097117, 1112146, 2136491, 2194234, 4272982, 5799047, 11598094, 40593329, 81186658]

約数ペア:

[(1, 81186658), (2, 40593329), (7, 11598094), (14, 5799047), (19, 4272982), (37, 2194234), (38, 2136491), (73, 1112146), (74, 1097117), (113, 718466), (133, 610426), (146, 556073), (226, 359233), (259, 313462), (266, 305213), (511, 158878), (518, 156731), (703, 115486), (791, 102638), (1022, 79439), (1387, 58534), (1406, 57743), (1582, 51319), (2147, 37814), (2701, 30058), (2774, 29267), (4181, 19418), (4294, 18907), (4921, 16498), (5402, 15029), (8249, 9842), (8362, 9709)]