18781961

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1217}}^1$

素因数の和:1312

約数の個数: 16

約数和(自身を含む): 21748608

約数和(自身を除く): 2966647

約数列:

[1, 11, 23, 61, 253, 671, 1217, 1403, 13387, 15433, 27991, 74237, 307901, 816607, 1707451, 18781961]

約数ペア:

[(1, 18781961), (11, 1707451), (23, 816607), (61, 307901), (253, 74237), (671, 27991), (1217, 15433), (1403, 13387)]