19866275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{5557}}^1$

素因数の和:5591

約数の個数: 24

約数和(自身を含む): 28946064

約数和(自身を除く): 9079789

約数列:

[1, 5, 11, 13, 25, 55, 65, 143, 275, 325, 715, 3575, 5557, 27785, 61127, 72241, 138925, 305635, 361205, 794651, 1528175, 1806025, 3973255, 19866275]

約数ペア:

[(1, 19866275), (5, 3973255), (11, 1806025), (13, 1528175), (25, 794651), (55, 361205), (65, 305635), (143, 138925), (275, 72241), (325, 61127), (715, 27785), (3575, 5557)]