21647416

素因数分解:

$2^3\times 7^6\times {\mathrm{23}}^1$

素因数の和:71

約数の個数: 56

約数和(自身を含む): 49412520

約数和(自身を除く): 27765104

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 49, 56, 92, 98, 161, 184, 196, 322, 343, 392, 644, 686, 1127, 1288, 1372, 2254, 2401, 2744, 4508, 4802, 7889, 9016, 9604, 15778, 16807, 19208, 31556, 33614, 55223, 63112, 67228, 110446, 117649, 134456, 220892, 235298, 386561, 441784, 470596, 773122, 941192, 1546244, 2705927, 3092488, 5411854, 10823708, 21647416]

約数ペア:

[(1, 21647416), (2, 10823708), (4, 5411854), (7, 3092488), (8, 2705927), (14, 1546244), (23, 941192), (28, 773122), (46, 470596), (49, 441784), (56, 386561), (92, 235298), (98, 220892), (161, 134456), (184, 117649), (196, 110446), (322, 67228), (343, 63112), (392, 55223), (644, 33614), (686, 31556), (1127, 19208), (1288, 16807), (1372, 15778), (2254, 9604), (2401, 9016), (2744, 7889), (4508, 4802)]