20894649

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{379}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 10624071

約数列:

[1, 3, 17, 23, 47, 51, 69, 141, 379, 391, 799, 1081, 1137, 1173, 2397, 3243, 6443, 8717, 17813, 18377, 19329, 26151, 53439, 55131, 148189, 302821, 409699, 444567, 908463, 1229097, 6964883, 20894649]

約数ペア:

[(1, 20894649), (3, 6964883), (17, 1229097), (23, 908463), (47, 444567), (51, 409699), (69, 302821), (141, 148189), (379, 55131), (391, 53439), (799, 26151), (1081, 19329), (1137, 18377), (1173, 17813), (2397, 8717), (3243, 6443)]