20661172

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{8291}}^1$

素因数の和:8391

約数の個数: 24

約数和(自身を含む): 41791680

約数和(自身を除く): 21130508

約数列:

[1, 2, 4, 7, 14, 28, 89, 178, 356, 623, 1246, 2492, 8291, 16582, 33164, 58037, 116074, 232148, 737899, 1475798, 2951596, 5165293, 10330586, 20661172]

約数ペア:

[(1, 20661172), (2, 10330586), (4, 5165293), (7, 2951596), (14, 1475798), (28, 737899), (89, 232148), (178, 116074), (356, 58037), (623, 33164), (1246, 16582), (2492, 8291)]