20988342

素因数分解:

$2^1\times 3^3\times {\mathrm{388673}}^1$

素因数の和:388684

約数の個数: 16

約数和(自身を含む): 46640880

約数和(自身を除く): 25652538

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 388673, 777346, 1166019, 2332038, 3498057, 6996114, 10494171, 20988342]

約数ペア:

[(1, 20988342), (2, 10494171), (3, 6996114), (6, 3498057), (9, 2332038), (18, 1166019), (27, 777346), (54, 388673)]