20442789

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{2521}}^1$

素因数の和:2597

約数の個数: 24

約数和(自身を含む): 31867992

約数和(自身を除く): 11425203

約数列:

[1, 3, 9, 17, 51, 53, 153, 159, 477, 901, 2521, 2703, 7563, 8109, 22689, 42857, 128571, 133613, 385713, 400839, 1202517, 2271421, 6814263, 20442789]

約数ペア:

[(1, 20442789), (3, 6814263), (9, 2271421), (17, 1202517), (51, 400839), (53, 385713), (153, 133613), (159, 128571), (477, 42857), (901, 22689), (2521, 8109), (2703, 7563)]