21480609

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{431}}^1\times {\mathrm{449}}^1$

素因数の和:920

約数の個数: 16

約数和(自身を含む): 29548800

約数和(自身を除く): 8068191

約数列:

[1, 3, 37, 111, 431, 449, 1293, 1347, 15947, 16613, 47841, 49839, 193519, 580557, 7160203, 21480609]

約数ペア:

[(1, 21480609), (3, 7160203), (37, 580557), (111, 193519), (431, 49839), (449, 47841), (1293, 16613), (1347, 15947)]