21218922

素因数分解:

$2^1\times 3^4\times {\mathrm{130981}}^1$

素因数の和:130995

約数の個数: 20

約数和(自身を含む): 47546466

約数和(自身を除く): 26327544

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 130981, 261962, 392943, 785886, 1178829, 2357658, 3536487, 7072974, 10609461, 21218922]

約数ペア:

[(1, 21218922), (2, 10609461), (3, 7072974), (6, 3536487), (9, 2357658), (18, 1178829), (27, 785886), (54, 392943), (81, 261962), (162, 130981)]