20878052

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{1291}}^1$

素因数の和:1619

約数の個数: 24

約数和(自身を含む): 39504192

約数和(自身を除く): 18626140

約数列:

[1, 2, 4, 13, 26, 52, 311, 622, 1244, 1291, 2582, 4043, 5164, 8086, 16172, 16783, 33566, 67132, 401501, 803002, 1606004, 5219513, 10439026, 20878052]

約数ペア:

[(1, 20878052), (2, 10439026), (4, 5219513), (13, 1606004), (26, 803002), (52, 401501), (311, 67132), (622, 33566), (1244, 16783), (1291, 16172), (2582, 8086), (4043, 5164)]