21481377

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{167}}^1\times {\mathrm{809}}^1$

素因数の和:1032

約数の個数: 16

約数和(自身を含む): 29393280

約数和(自身を除く): 7911903

約数列:

[1, 3, 53, 159, 167, 501, 809, 2427, 8851, 26553, 42877, 128631, 135103, 405309, 7160459, 21481377]

約数ペア:

[(1, 21481377), (3, 7160459), (53, 405309), (159, 135103), (167, 128631), (501, 42877), (809, 26553), (2427, 8851)]