21270970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{303871}}^1$

素因数の和:303885

約数の個数: 16

約数和(自身を含む): 43757568

約数和(自身を除く): 22486598

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 303871, 607742, 1519355, 2127097, 3038710, 4254194, 10635485, 21270970]

約数ペア:

[(1, 21270970), (2, 10635485), (5, 4254194), (7, 3038710), (10, 2127097), (14, 1519355), (35, 607742), (70, 303871)]