19938387

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{20201}}^1$

素因数の和:20258

約数の個数: 16

約数和(自身を含む): 31030272

約数和(自身を除く): 11091885

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 20201, 60603, 141407, 424221, 949447, 2848341, 6646129, 19938387]

約数ペア:

[(1, 19938387), (3, 6646129), (7, 2848341), (21, 949447), (47, 424221), (141, 141407), (329, 60603), (987, 20201)]