21770979

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{1979}}^1$

素因数の和:2194

約数の個数: 16

約数和(自身を含む): 30729600

約数和(自身を除く): 8958621

約数列:

[1, 3, 19, 57, 193, 579, 1979, 3667, 5937, 11001, 37601, 112803, 381947, 1145841, 7256993, 21770979]

約数ペア:

[(1, 21770979), (3, 7256993), (19, 1145841), (57, 381947), (193, 112803), (579, 37601), (1979, 11001), (3667, 5937)]