2158569

素因数分解:

$3^8\times 7^1\times {\mathrm{47}}^1$

素因数の和:78

約数の個数: 36

約数和(自身を含む): 3778944

約数和(自身を除く): 1620375

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 81, 141, 189, 243, 329, 423, 567, 729, 987, 1269, 1701, 2187, 2961, 3807, 5103, 6561, 8883, 11421, 15309, 26649, 34263, 45927, 79947, 102789, 239841, 308367, 719523, 2158569]

約数ペア:

[(1, 2158569), (3, 719523), (7, 308367), (9, 239841), (21, 102789), (27, 79947), (47, 45927), (63, 34263), (81, 26649), (141, 15309), (189, 11421), (243, 8883), (329, 6561), (423, 5103), (567, 3807), (729, 2961), (987, 2187), (1269, 1701)]