21055881

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{91151}}^1$

素因数の和:91172

約数の個数: 16

約数和(自身を含む): 35002368

約数和(自身を除く): 13946487

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 91151, 273453, 638057, 1002661, 1914171, 3007983, 7018627, 21055881]

約数ペア:

[(1, 21055881), (3, 7018627), (7, 3007983), (11, 1914171), (21, 1002661), (33, 638057), (77, 273453), (231, 91151)]