16721883

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{4801}}^1$

素因数の和:4856

約数の個数: 20

約数和(自身を含む): 25565848

約数和(自身を除く): 8843965

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 4801, 14403, 43209, 129627, 206443, 388881, 619329, 1857987, 5573961, 16721883]

約数ペア:

[(1, 16721883), (3, 5573961), (9, 1857987), (27, 619329), (43, 388881), (81, 206443), (129, 129627), (387, 43209), (1161, 14403), (3483, 4801)]