21053109

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{91139}}^1$

素因数の和:91160

約数の個数: 16

約数和(自身を含む): 34997760

約数和(自身を除く): 13944651

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 91139, 273417, 637973, 1002529, 1913919, 3007587, 7017703, 21053109]

約数ペア:

[(1, 21053109), (3, 7017703), (7, 3007587), (11, 1913919), (21, 1002529), (33, 637973), (77, 273417), (231, 91139)]