20964692

素因数分解:

$2^2\times 7^1\times {\mathrm{509}}^1\times {\mathrm{1471}}^1$

素因数の和:1991

約数の個数: 24

約数和(自身を含む): 42040320

約数和(自身を除く): 21075628

約数列:

[1, 2, 4, 7, 14, 28, 509, 1018, 1471, 2036, 2942, 3563, 5884, 7126, 10297, 14252, 20594, 41188, 748739, 1497478, 2994956, 5241173, 10482346, 20964692]

約数ペア:

[(1, 20964692), (2, 10482346), (4, 5241173), (7, 2994956), (14, 1497478), (28, 748739), (509, 41188), (1018, 20594), (1471, 14252), (2036, 10297), (2942, 7126), (3563, 5884)]