19728970

素因数分解:

$2^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{5653}}^1$

素因数の和:6009

約数の個数: 16

約数和(自身を含む): 35620200

約数和(自身を除く): 15891230

約数列:

[1, 2, 5, 10, 349, 698, 1745, 3490, 5653, 11306, 28265, 56530, 1972897, 3945794, 9864485, 19728970]

約数ペア:

[(1, 19728970), (2, 9864485), (5, 3945794), (10, 1972897), (349, 56530), (698, 28265), (1745, 11306), (3490, 5653)]