20783903

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{457}}^1$

素因数の和:626

約数の個数: 16

約数和(自身を含む): 24402240

約数和(自身を除く): 3618337

約数列:

[1, 7, 73, 89, 457, 511, 623, 3199, 6497, 33361, 40673, 45479, 233527, 284711, 2969129, 20783903]

約数ペア:

[(1, 20783903), (7, 2969129), (73, 284711), (89, 233527), (457, 45479), (511, 40673), (623, 33361), (3199, 6497)]