21369831

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{3929}}^1$

素因数の和:3983

約数の個数: 24

約数和(自身を含む): 34049520

約数和(自身を除く): 12679689

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 3929, 5439, 11787, 27503, 82509, 145373, 192521, 436119, 577563, 1017611, 3052833, 7123277, 21369831]

約数ペア:

[(1, 21369831), (3, 7123277), (7, 3052833), (21, 1017611), (37, 577563), (49, 436119), (111, 192521), (147, 145373), (259, 82509), (777, 27503), (1813, 11787), (3929, 5439)]