21902091

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{991}}^1$

素因数の和:1186

約数の個数: 16

約数和(自身を含む): 29998080

約数和(自身を除く): 8095989

約数列:

[1, 3, 53, 139, 159, 417, 991, 2973, 7367, 22101, 52523, 137749, 157569, 413247, 7300697, 21902091]

約数ペア:

[(1, 21902091), (3, 7300697), (53, 413247), (139, 157569), (159, 137749), (417, 52523), (991, 22101), (2973, 7367)]