18927819

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1559}}^1$

素因数の和:1655

約数の個数: 24

約数和(自身を含む): 29203200

約数和(自身を除く): 10275381

約数列:

[1, 3, 9, 19, 57, 71, 171, 213, 639, 1349, 1559, 4047, 4677, 12141, 14031, 29621, 88863, 110689, 266589, 332067, 996201, 2103091, 6309273, 18927819]

約数ペア:

[(1, 18927819), (3, 6309273), (9, 2103091), (19, 996201), (57, 332067), (71, 266589), (171, 110689), (213, 88863), (639, 29621), (1349, 14031), (1559, 12141), (4047, 4677)]