21238545

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61561}}^1$

素因数の和:61592

約数の個数: 16

約数和(自身を含む): 35459712

約数和(自身を除く): 14221167

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 61561, 184683, 307805, 923415, 1415903, 4247709, 7079515, 21238545]

約数ペア:

[(1, 21238545), (3, 7079515), (5, 4247709), (15, 1415903), (23, 923415), (69, 307805), (115, 184683), (345, 61561)]