20964897

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{461}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 31519488

約数和(自身を除く): 10554591

約数列:

[1, 3, 9, 31, 93, 163, 279, 461, 489, 1383, 1467, 4149, 5053, 14291, 15159, 42873, 45477, 75143, 128619, 225429, 676287, 2329433, 6988299, 20964897]

約数ペア:

[(1, 20964897), (3, 6988299), (9, 2329433), (31, 676287), (93, 225429), (163, 128619), (279, 75143), (461, 45477), (489, 42873), (1383, 15159), (1467, 14291), (4149, 5053)]