28339731

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{563}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 50678784

約数和(自身を除く): 22339053

約数列:

[1, 3, 7, 9, 17, 21, 47, 51, 63, 119, 141, 153, 329, 357, 423, 563, 799, 987, 1071, 1689, 2397, 2961, 3941, 5067, 5593, 7191, 9571, 11823, 16779, 26461, 28713, 35469, 50337, 66997, 79383, 86139, 185227, 200991, 238149, 449837, 555681, 602973, 1349511, 1667043, 3148859, 4048533, 9446577, 28339731]

約数ペア:

[(1, 28339731), (3, 9446577), (7, 4048533), (9, 3148859), (17, 1667043), (21, 1349511), (47, 602973), (51, 555681), (63, 449837), (119, 238149), (141, 200991), (153, 185227), (329, 86139), (357, 79383), (423, 66997), (563, 50337), (799, 35469), (987, 28713), (1071, 26461), (1689, 16779), (2397, 11823), (2961, 9571), (3941, 7191), (5067, 5593)]