21371418

素因数分解:

$2^1\times 3^3\times {\mathrm{395767}}^1$

素因数の和:395778

約数の個数: 16

約数和(自身を含む): 47492160

約数和(自身を除く): 26120742

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 395767, 791534, 1187301, 2374602, 3561903, 7123806, 10685709, 21371418]

約数ペア:

[(1, 21371418), (2, 10685709), (3, 7123806), (6, 3561903), (9, 2374602), (18, 1187301), (27, 791534), (54, 395767)]