20391041

素因数分解:

${\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{431}}^1$

素因数の和:493

約数の個数: 24

約数和(自身を含む): 24820992

約数和(自身を除く): 4429951

約数列:

[1, 11, 17, 23, 121, 187, 253, 391, 431, 2057, 2783, 4301, 4741, 7327, 9913, 47311, 52151, 80597, 109043, 168521, 886567, 1199473, 1853731, 20391041]

約数ペア:

[(1, 20391041), (11, 1853731), (17, 1199473), (23, 886567), (121, 168521), (187, 109043), (253, 80597), (391, 52151), (431, 47311), (2057, 9913), (2783, 7327), (4301, 4741)]