21221295

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61511}}^1$

素因数の和:61542

約数の個数: 16

約数和(自身を含む): 35430912

約数和(自身を除く): 14209617

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 61511, 184533, 307555, 922665, 1414753, 4244259, 7073765, 21221295]

約数ペア:

[(1, 21221295), (3, 7073765), (5, 4244259), (15, 1414753), (23, 922665), (69, 307555), (115, 184533), (345, 61511)]