21455139

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{4337}}^1$

素因数の和:4454

約数の個数: 16

約数和(自身を含む): 30608928

約数和(自身を除く): 9153789

約数列:

[1, 3, 17, 51, 97, 291, 1649, 4337, 4947, 13011, 73729, 221187, 420689, 1262067, 7151713, 21455139]

約数ペア:

[(1, 21455139), (3, 7151713), (17, 1262067), (51, 420689), (97, 221187), (291, 73729), (1649, 13011), (4337, 4947)]