20021757

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{17989}}^1$

素因数の和:18052

約数の個数: 16

約数和(自身を含む): 31086720

約数和(自身を除く): 11064963

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 17989, 53967, 125923, 377769, 953417, 2860251, 6673919, 20021757]

約数ペア:

[(1, 20021757), (3, 6673919), (7, 2860251), (21, 953417), (53, 377769), (159, 125923), (371, 53967), (1113, 17989)]