18898985

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1381}}^1$

素因数の和:1433

約数の個数: 32

約数和(自身を含む): 28657152

約数和(自身を除く): 9758167

約数列:

[1, 5, 7, 17, 23, 35, 85, 115, 119, 161, 391, 595, 805, 1381, 1955, 2737, 6905, 9667, 13685, 23477, 31763, 48335, 117385, 158815, 164339, 222341, 539971, 821695, 1111705, 2699855, 3779797, 18898985]

約数ペア:

[(1, 18898985), (5, 3779797), (7, 2699855), (17, 1111705), (23, 821695), (35, 539971), (85, 222341), (115, 164339), (119, 158815), (161, 117385), (391, 48335), (595, 31763), (805, 23477), (1381, 13685), (1955, 9667), (2737, 6905)]