21081050

素因数分解:

$2^1\times 5^2\times {\mathrm{421621}}^1$

素因数の和:421633

約数の個数: 12

約数和(自身を含む): 39210846

約数和(自身を除く): 18129796

約数列:

[1, 2, 5, 10, 25, 50, 421621, 843242, 2108105, 4216210, 10540525, 21081050]

約数ペア:

[(1, 21081050), (2, 10540525), (5, 4216210), (10, 2108105), (25, 843242), (50, 421621)]