212980405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{203809}}^1$

素因数の和:203844

約数の個数: 16

約数和(自身を含む): 293486400

約数和(自身を除く): 80505995

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 203809, 1019045, 2241899, 3872371, 11209495, 19361855, 42596081, 212980405]

約数ペア:

[(1, 212980405), (5, 42596081), (11, 19361855), (19, 11209495), (55, 3872371), (95, 2241899), (209, 1019045), (1045, 203809)]