21381105

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{33149}}^1$

素因数の和:33200

約数の個数: 16

約数和(自身を含む): 35006400

約数和(自身を除く): 13625295

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 33149, 99447, 165745, 497235, 1425407, 4276221, 7127035, 21381105]

約数ペア:

[(1, 21381105), (3, 7127035), (5, 4276221), (15, 1425407), (43, 497235), (129, 165745), (215, 99447), (645, 33149)]