20818197

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{617}}^1$

素因数の和:809

約数の個数: 24

約数和(自身を含む): 31621824

約数和(自身を除く): 10803627

約数列:

[1, 3, 9, 23, 69, 163, 207, 489, 617, 1467, 1851, 3749, 5553, 11247, 14191, 33741, 42573, 100571, 127719, 301713, 905139, 2313133, 6939399, 20818197]

約数ペア:

[(1, 20818197), (3, 6939399), (9, 2313133), (23, 905139), (69, 301713), (163, 127719), (207, 100571), (489, 42573), (617, 33741), (1467, 14191), (1851, 11247), (3749, 5553)]