18991170055

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{997}}^1\times {\mathrm{26641}}^1$

素因数の和:27667

約数の個数: 32

約数和(自身を含む): 26801425728

約数和(自身を除く): 7810255673

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 997, 4985, 10967, 12961, 26641, 54835, 64805, 133205, 142571, 293051, 346333, 712855, 1465255, 1731665, 3809663, 19048315, 26561077, 132805385, 292171847, 345294001, 1460859235, 1726470005, 3798234011, 18991170055]

約数ペア:

[(1, 18991170055), (5, 3798234011), (11, 1726470005), (13, 1460859235), (55, 345294001), (65, 292171847), (143, 132805385), (715, 26561077), (997, 19048315), (4985, 3809663), (10967, 1731665), (12961, 1465255), (26641, 712855), (54835, 346333), (64805, 293051), (133205, 142571)]