20478554

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1\times {\mathrm{733}}^1$

素因数の和:1025

約数の個数: 16

約数和(自身を含む): 31400520

約数和(自身を除く): 10921966

約数列:

[1, 2, 61, 122, 229, 458, 733, 1466, 13969, 27938, 44713, 89426, 167857, 335714, 10239277, 20478554]

約数ペア:

[(1, 20478554), (2, 10239277), (61, 335714), (122, 167857), (229, 89426), (458, 44713), (733, 27938), (1466, 13969)]