21070970

素因数分解:

$2^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{13421}}^1$

素因数の和:13585

約数の個数: 16

約数和(自身を含む): 38172168

約数和(自身を除く): 17101198

約数列:

[1, 2, 5, 10, 157, 314, 785, 1570, 13421, 26842, 67105, 134210, 2107097, 4214194, 10535485, 21070970]

約数ペア:

[(1, 21070970), (2, 10535485), (5, 4214194), (10, 2107097), (157, 134210), (314, 67105), (785, 26842), (1570, 13421)]