21053901

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{27739}}^1$

素因数の和:27776

約数の個数: 16

約数和(自身を含む): 31956480

約数和(自身を除く): 10902579

約数列:

[1, 3, 11, 23, 33, 69, 253, 759, 27739, 83217, 305129, 637997, 915387, 1913991, 7017967, 21053901]

約数ペア:

[(1, 21053901), (3, 7017967), (11, 1913991), (23, 915387), (33, 637997), (69, 305129), (253, 83217), (759, 27739)]