21208986

素因数分解:

$2^1\times 3^3\times {\mathrm{392759}}^1$

素因数の和:392770

約数の個数: 16

約数和(自身を含む): 47131200

約数和(自身を除く): 25922214

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 392759, 785518, 1178277, 2356554, 3534831, 7069662, 10604493, 21208986]

約数ペア:

[(1, 21208986), (2, 10604493), (3, 7069662), (6, 3534831), (9, 2356554), (18, 1178277), (27, 785518), (54, 392759)]