21572840

素因数分解:

$2^3\times 5^1\times {\mathrm{539321}}^1$

素因数の和:539332

約数の個数: 16

約数和(自身を含む): 48538980

約数和(自身を除く): 26966140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 539321, 1078642, 2157284, 2696605, 4314568, 5393210, 10786420, 21572840]

約数ペア:

[(1, 21572840), (2, 10786420), (4, 5393210), (5, 4314568), (8, 2696605), (10, 2157284), (20, 1078642), (40, 539321)]