21379829

素因数分解:

${\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{389}}^1$

素因数の和:520

約数の個数: 16

約数和(自身を含む): 23502960

約数和(自身を除く): 2123131

約数列:

[1, 17, 53, 61, 389, 901, 1037, 3233, 6613, 20617, 23729, 54961, 350489, 403393, 1257637, 21379829]

約数ペア:

[(1, 21379829), (17, 1257637), (53, 403393), (61, 350489), (389, 54961), (901, 23729), (1037, 20617), (3233, 6613)]