21264010

素因数分解:

$2^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{3307}}^1$

素因数の和:3957

約数の個数: 16

約数和(自身を含む): 38346336

約数和(自身を除く): 17082326

約数列:

[1, 2, 5, 10, 643, 1286, 3215, 3307, 6430, 6614, 16535, 33070, 2126401, 4252802, 10632005, 21264010]

約数ペア:

[(1, 21264010), (2, 10632005), (5, 4252802), (10, 2126401), (643, 33070), (1286, 16535), (3215, 6614), (3307, 6430)]