19861611

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 34276608

約数和(自身を除く): 14414997

約数列:

[1, 3, 7, 11, 21, 33, 49, 71, 77, 147, 173, 213, 231, 497, 519, 539, 781, 1211, 1491, 1617, 1903, 2343, 3479, 3633, 5467, 5709, 8477, 10437, 12283, 13321, 16401, 25431, 36849, 38269, 39963, 85981, 93247, 114807, 135113, 257943, 279741, 405339, 601867, 945791, 1805601, 2837373, 6620537, 19861611]

約数ペア:

[(1, 19861611), (3, 6620537), (7, 2837373), (11, 1805601), (21, 945791), (33, 601867), (49, 405339), (71, 279741), (77, 257943), (147, 135113), (173, 114807), (213, 93247), (231, 85981), (497, 39963), (519, 38269), (539, 36849), (781, 25431), (1211, 16401), (1491, 13321), (1617, 12283), (1903, 10437), (2343, 8477), (3479, 5709), (3633, 5467)]