21953379

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{55021}}^1$

素因数の和:55050

約数の個数: 16

約数和(自身を含む): 35214080

約数和(自身を除く): 13260701

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 55021, 165063, 385147, 1045399, 1155441, 3136197, 7317793, 21953379]

約数ペア:

[(1, 21953379), (3, 7317793), (7, 3136197), (19, 1155441), (21, 1045399), (57, 385147), (133, 165063), (399, 55021)]