21399618

素因数分解:

$2^1\times 3^1\times {\mathrm{163}}^1\times {\mathrm{21881}}^1$

素因数の和:22049

約数の個数: 16

約数和(自身を含む): 43063776

約数和(自身を除く): 21664158

約数列:

[1, 2, 3, 6, 163, 326, 489, 978, 21881, 43762, 65643, 131286, 3566603, 7133206, 10699809, 21399618]

約数ペア:

[(1, 21399618), (2, 10699809), (3, 7133206), (6, 3566603), (163, 131286), (326, 65643), (489, 43762), (978, 21881)]