21213954

素因数分解:

$2^1\times 3^3\times {\mathrm{392851}}^1$

素因数の和:392862

約数の個数: 16

約数和(自身を含む): 47142240

約数和(自身を除く): 25928286

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 392851, 785702, 1178553, 2357106, 3535659, 7071318, 10606977, 21213954]

約数ペア:

[(1, 21213954), (2, 10606977), (3, 7071318), (6, 3535659), (9, 2357106), (18, 1178553), (27, 785702), (54, 392851)]