20163988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{1609}}^1$

素因数の和:1867

約数の個数: 24

約数和(自身を含む): 38182760

約数和(自身を除く): 18018772

約数列:

[1, 2, 4, 13, 26, 52, 241, 482, 964, 1609, 3133, 3218, 6266, 6436, 12532, 20917, 41834, 83668, 387769, 775538, 1551076, 5040997, 10081994, 20163988]

約数ペア:

[(1, 20163988), (2, 10081994), (4, 5040997), (13, 1551076), (26, 775538), (52, 387769), (241, 83668), (482, 41834), (964, 20917), (1609, 12532), (3133, 6436), (3218, 6266)]