21340078

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{3769}}^1$

素因数の和:3939

約数の個数: 16

約数和(自身を含む): 33930000

約数和(自身を除く): 12589922

約数列:

[1, 2, 19, 38, 149, 298, 2831, 3769, 5662, 7538, 71611, 143222, 561581, 1123162, 10670039, 21340078]

約数ペア:

[(1, 21340078), (2, 10670039), (19, 1123162), (38, 561581), (149, 143222), (298, 71611), (2831, 7538), (3769, 5662)]