21691618

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{613}}^1\times {\mathrm{1361}}^1$

素因数の和:1989

約数の個数: 16

約数和(自身を含む): 35123256

約数和(自身を除く): 13431638

約数列:

[1, 2, 13, 26, 613, 1226, 1361, 2722, 7969, 15938, 17693, 35386, 834293, 1668586, 10845809, 21691618]

約数ペア:

[(1, 21691618), (2, 10845809), (13, 1668586), (26, 834293), (613, 35386), (1226, 17693), (1361, 15938), (2722, 7969)]