20994183

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17539}}^1$

素因数の和:17571

約数の個数: 24

約数和(自身を含む): 36483200

約数和(自身を除く): 15489017

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17539, 52617, 122773, 157851, 333241, 368319, 999723, 1104957, 2332687, 2999169, 6998061, 20994183]

約数ペア:

[(1, 20994183), (3, 6998061), (7, 2999169), (9, 2332687), (19, 1104957), (21, 999723), (57, 368319), (63, 333241), (133, 157851), (171, 122773), (399, 52617), (1197, 17539)]