21079541

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{577}}^1$

素因数の和:908

約数の個数: 16

約数和(自身を含む): 25635456

約数和(自身を除く): 4555915

約数列:

[1, 7, 17, 119, 307, 577, 2149, 4039, 5219, 9809, 36533, 68663, 177139, 1239973, 3011363, 21079541]

約数ペア:

[(1, 21079541), (7, 3011363), (17, 1239973), (119, 177139), (307, 68663), (577, 36533), (2149, 9809), (4039, 5219)]