20154970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{16657}}^1$

素因数の和:16686

約数の個数: 24

約数和(自身を含む): 39879252

約数和(自身を除く): 19724282

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 16657, 33314, 83285, 166570, 183227, 366454, 916135, 1832270, 2015497, 4030994, 10077485, 20154970]

約数ペア:

[(1, 20154970), (2, 10077485), (5, 4030994), (10, 2015497), (11, 1832270), (22, 916135), (55, 366454), (110, 183227), (121, 166570), (242, 83285), (605, 33314), (1210, 16657)]