18917115

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2689}}^1$

素因数の和:2771

約数の個数: 32

約数和(自身を含む): 35120640

約数和(自身を除く): 16203525

約数列:

[1, 3, 5, 7, 15, 21, 35, 67, 105, 201, 335, 469, 1005, 1407, 2345, 2689, 7035, 8067, 13445, 18823, 40335, 56469, 94115, 180163, 282345, 540489, 900815, 1261141, 2702445, 3783423, 6305705, 18917115]

約数ペア:

[(1, 18917115), (3, 6305705), (5, 3783423), (7, 2702445), (15, 1261141), (21, 900815), (35, 540489), (67, 282345), (105, 180163), (201, 94115), (335, 56469), (469, 40335), (1005, 18823), (1407, 13445), (2345, 8067), (2689, 7035)]