20879421

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{373}}^1\times {\mathrm{397}}^1$

素因数の和:820

約数の個数: 16

約数和(自身を含む): 28579584

約数和(自身を除く): 7700163

約数列:

[1, 3, 47, 141, 373, 397, 1119, 1191, 17531, 18659, 52593, 55977, 148081, 444243, 6959807, 20879421]

約数ペア:

[(1, 20879421), (3, 6959807), (47, 444243), (141, 148081), (373, 55977), (397, 52593), (1119, 18659), (1191, 17531)]