20528673

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:134

約数の個数: 64

約数和(自身を含む): 34670592

約数和(自身を除く): 14141919

約数列:

[1, 3, 11, 17, 23, 33, 37, 43, 51, 69, 111, 129, 187, 253, 391, 407, 473, 561, 629, 731, 759, 851, 989, 1173, 1221, 1419, 1591, 1887, 2193, 2553, 2967, 4301, 4773, 6919, 8041, 9361, 10879, 12903, 14467, 16813, 17501, 20757, 24123, 27047, 28083, 32637, 36593, 43401, 50439, 52503, 81141, 109779, 159137, 184943, 297517, 402523, 477411, 554829, 622081, 892551, 1207569, 1866243, 6842891, 20528673]

約数ペア:

[(1, 20528673), (3, 6842891), (11, 1866243), (17, 1207569), (23, 892551), (33, 622081), (37, 554829), (43, 477411), (51, 402523), (69, 297517), (111, 184943), (129, 159137), (187, 109779), (253, 81141), (391, 52503), (407, 50439), (473, 43401), (561, 36593), (629, 32637), (731, 28083), (759, 27047), (851, 24123), (989, 20757), (1173, 17501), (1221, 16813), (1419, 14467), (1591, 12903), (1887, 10879), (2193, 9361), (2553, 8041), (2967, 6919), (4301, 4773)]