21129039

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{18199}}^1$

素因数の和:18251

約数の個数: 16

約数和(自身を含む): 32032000

約数和(自身を除く): 10902961

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 18199, 54597, 163791, 491373, 782557, 2347671, 7043013, 21129039]

約数ペア:

[(1, 21129039), (3, 7043013), (9, 2347671), (27, 782557), (43, 491373), (129, 163791), (387, 54597), (1161, 18199)]