21049784

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{277}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 48038400

約数和(自身を除く): 26988616

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 59, 92, 118, 161, 184, 236, 277, 322, 413, 472, 554, 644, 826, 1108, 1288, 1357, 1652, 1939, 2216, 2714, 3304, 3878, 5428, 6371, 7756, 9499, 10856, 12742, 15512, 16343, 18998, 25484, 32686, 37996, 44597, 50968, 65372, 75992, 89194, 114401, 130744, 178388, 228802, 356776, 375889, 457604, 751778, 915208, 1503556, 2631223, 3007112, 5262446, 10524892, 21049784]

約数ペア:

[(1, 21049784), (2, 10524892), (4, 5262446), (7, 3007112), (8, 2631223), (14, 1503556), (23, 915208), (28, 751778), (46, 457604), (56, 375889), (59, 356776), (92, 228802), (118, 178388), (161, 130744), (184, 114401), (236, 89194), (277, 75992), (322, 65372), (413, 50968), (472, 44597), (554, 37996), (644, 32686), (826, 25484), (1108, 18998), (1288, 16343), (1357, 15512), (1652, 12742), (1939, 10856), (2216, 9499), (2714, 7756), (3304, 6371), (3878, 5428)]