21235521

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{10069}}^1$

素因数の和:10128

約数の個数: 16

約数和(自身を含む): 30612800

約数和(自身を除く): 9377279

約数列:

[1, 3, 19, 37, 57, 111, 703, 2109, 10069, 30207, 191311, 372553, 573933, 1117659, 7078507, 21235521]

約数ペア:

[(1, 21235521), (3, 7078507), (19, 1117659), (37, 573933), (57, 372553), (111, 191311), (703, 30207), (2109, 10069)]