20445453

素因数分解:

$3^4\times 7^1\times {\mathrm{107}}^1\times {\mathrm{337}}^1$

素因数の和:463

約数の個数: 40

約数和(自身を含む): 35335872

約数和(自身を除く): 14890419

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 107, 189, 321, 337, 567, 749, 963, 1011, 2247, 2359, 2889, 3033, 6741, 7077, 8667, 9099, 20223, 21231, 27297, 36059, 60669, 63693, 108177, 191079, 252413, 324531, 757239, 973593, 2271717, 2920779, 6815151, 20445453]

約数ペア:

[(1, 20445453), (3, 6815151), (7, 2920779), (9, 2271717), (21, 973593), (27, 757239), (63, 324531), (81, 252413), (107, 191079), (189, 108177), (321, 63693), (337, 60669), (567, 36059), (749, 27297), (963, 21231), (1011, 20223), (2247, 9099), (2359, 8667), (2889, 7077), (3033, 6741)]