20717997

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1\times {\mathrm{941}}^1$

素因数の和:1164

約数の個数: 16

約数和(自身を含む): 28486080

約数和(自身を除く): 7768083

約数列:

[1, 3, 41, 123, 179, 537, 941, 2823, 7339, 22017, 38581, 115743, 168439, 505317, 6905999, 20717997]

約数ペア:

[(1, 20717997), (3, 6905999), (41, 505317), (123, 168439), (179, 115743), (537, 38581), (941, 22017), (2823, 7339)]