20689545

素因数分解:

$3^1\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{1367}}^1$

素因数の和:2384

約数の個数: 16

約数和(自身を含む): 33160320

約数和(自身を除く): 12470775

約数列:

[1, 3, 5, 15, 1009, 1367, 3027, 4101, 5045, 6835, 15135, 20505, 1379303, 4137909, 6896515, 20689545]

約数ペア:

[(1, 20689545), (3, 6896515), (5, 4137909), (15, 1379303), (1009, 20505), (1367, 15135), (3027, 6835), (4101, 5045)]