19663721

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{971}}^1$

素因数の和:1252

約数の個数: 16

約数和(自身を含む): 24634368

約数和(自身を除く): 4970647

約数列:

[1, 7, 11, 77, 263, 971, 1841, 2893, 6797, 10681, 20251, 74767, 255373, 1787611, 2809103, 19663721]

約数ペア:

[(1, 19663721), (7, 2809103), (11, 1787611), (77, 255373), (263, 74767), (971, 20251), (1841, 10681), (2893, 6797)]