21560792

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{499}}^1$

素因数の和:1007

約数の個数: 32

約数和(自身を含む): 44280000

約数和(自身を除く): 22719208

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 491, 499, 982, 998, 1964, 1996, 3928, 3992, 5401, 5489, 10802, 10978, 21604, 21956, 43208, 43912, 245009, 490018, 980036, 1960072, 2695099, 5390198, 10780396, 21560792]

約数ペア:

[(1, 21560792), (2, 10780396), (4, 5390198), (8, 2695099), (11, 1960072), (22, 980036), (44, 490018), (88, 245009), (491, 43912), (499, 43208), (982, 21956), (998, 21604), (1964, 10978), (1996, 10802), (3928, 5489), (3992, 5401)]