21949791

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{1087}}^1$

素因数の和:1270

約数の個数: 16

約数和(自身を含む): 30081024

約数和(自身を除く): 8131233

約数列:

[1, 3, 53, 127, 159, 381, 1087, 3261, 6731, 20193, 57611, 138049, 172833, 414147, 7316597, 21949791]

約数ペア:

[(1, 21949791), (3, 7316597), (53, 414147), (127, 172833), (159, 138049), (381, 57611), (1087, 20193), (3261, 6731)]