20556965

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28751}}^1$

素因数の和:28780

約数の個数: 16

約数和(自身を含む): 28982016

約数和(自身を除く): 8425051

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 28751, 143755, 316261, 373763, 1581305, 1868815, 4111393, 20556965]

約数ペア:

[(1, 20556965), (5, 4111393), (11, 1868815), (13, 1581305), (55, 373763), (65, 316261), (143, 143755), (715, 28751)]