21118117

素因数分解:

${\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:360

約数の個数: 16

約数和(自身を含む): 22860288

約数和(自身を除く): 1742171

約数列:

[1, 23, 43, 131, 163, 989, 3013, 3749, 5633, 7009, 21353, 129559, 161207, 491119, 918179, 21118117]

約数ペア:

[(1, 21118117), (23, 918179), (43, 491119), (131, 161207), (163, 129559), (989, 21353), (3013, 7009), (3749, 5633)]