21066387

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{2819}}^1$

素因数の和:2922

約数の個数: 16

約数和(自身を含む): 29237760

約数和(自身を除く): 8171373

約数列:

[1, 3, 47, 53, 141, 159, 2491, 2819, 7473, 8457, 132493, 149407, 397479, 448221, 7022129, 21066387]

約数ペア:

[(1, 21066387), (3, 7022129), (47, 448221), (53, 397479), (141, 149407), (159, 132493), (2491, 8457), (2819, 7473)]