20445.000000

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{439}}^1$

素因数の和:458

約数の個数: 24

約数和(自身を含む): 300960

約数和(自身を除く): 171894

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294, 439, 878, 1317, 2634, 3073, 6146, 9219, 18438, 21511, 43022, 64533, 129066]

約数ペア:

[(1, 129066), (2, 64533), (3, 43022), (6, 21511), (7, 18438), (14, 9219), (21, 6146), (42, 3073), (49, 2634), (98, 1317), (147, 878), (294, 439)]