20849973

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{21517}}^1$

素因数の和:21556

約数の個数: 16

約数和(自身を含む): 30985920

約数和(自身を除く): 10135947

約数列:

[1, 3, 17, 19, 51, 57, 323, 969, 21517, 64551, 365789, 408823, 1097367, 1226469, 6949991, 20849973]

約数ペア:

[(1, 20849973), (3, 6949991), (17, 1226469), (19, 1097367), (51, 408823), (57, 365789), (323, 64551), (969, 21517)]