20912085

素因数分解:

$3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{2851}}^1$

素因数の和:3025

約数の個数: 24

約数和(自身を含む): 36482784

約数和(自身を除く): 15570699

約数列:

[1, 3, 5, 9, 15, 45, 163, 489, 815, 1467, 2445, 2851, 7335, 8553, 14255, 25659, 42765, 128295, 464713, 1394139, 2323565, 4182417, 6970695, 20912085]

約数ペア:

[(1, 20912085), (3, 6970695), (5, 4182417), (9, 2323565), (15, 1394139), (45, 464713), (163, 128295), (489, 42765), (815, 25659), (1467, 14255), (2445, 8553), (2851, 7335)]