20919388

素因数分解:

$2^2\times 7^1\times {\mathrm{541}}^1\times {\mathrm{1381}}^1$

素因数の和:1933

約数の個数: 24

約数和(自身を含む): 41946464

約数和(自身を除く): 21027076

約数列:

[1, 2, 4, 7, 14, 28, 541, 1082, 1381, 2164, 2762, 3787, 5524, 7574, 9667, 15148, 19334, 38668, 747121, 1494242, 2988484, 5229847, 10459694, 20919388]

約数ペア:

[(1, 20919388), (2, 10459694), (4, 5229847), (7, 2988484), (14, 1494242), (28, 747121), (541, 38668), (1082, 19334), (1381, 15148), (2164, 9667), (2762, 7574), (3787, 5524)]