20781646251

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1\times {\mathrm{21487}}^1$

素因数の和:21751

約数の個数: 32

約数和(自身を含む): 29407961088

約数和(自身を除く): 8626314837

約数列:

[1, 3, 23, 69, 107, 131, 321, 393, 2461, 3013, 7383, 9039, 14017, 21487, 42051, 64461, 322391, 494201, 967173, 1482603, 2299109, 2814797, 6897327, 8444391, 52879507, 64740331, 158638521, 194220993, 301183279, 903549837, 6927215417, 20781646251]

約数ペア:

[(1, 20781646251), (3, 6927215417), (23, 903549837), (69, 301183279), (107, 194220993), (131, 158638521), (321, 64740331), (393, 52879507), (2461, 8444391), (3013, 6897327), (7383, 2814797), (9039, 2299109), (14017, 1482603), (21487, 967173), (42051, 494201), (64461, 322391)]