20961982

素因数分解:

$2^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1\times {\mathrm{641}}^1$

素因数の和:923

約数の個数: 16

約数和(自身を含む): 32033232

約数和(自身を除く): 11071250

約数列:

[1, 2, 83, 166, 197, 394, 641, 1282, 16351, 32702, 53203, 106406, 126277, 252554, 10480991, 20961982]

約数ペア:

[(1, 20961982), (2, 10480991), (83, 252554), (166, 126277), (197, 106406), (394, 53203), (641, 32702), (1282, 16351)]