20138989

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{281}}^1$

素因数の和:480

約数の個数: 16

約数和(自身を含む): 22503600

約数和(自身を除く): 2364611

約数列:

[1, 13, 37, 149, 281, 481, 1937, 3653, 5513, 10397, 41869, 71669, 135161, 544297, 1549153, 20138989]

約数ペア:

[(1, 20138989), (13, 1549153), (37, 544297), (149, 135161), (281, 71669), (481, 41869), (1937, 10397), (3653, 5513)]