18945717

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{461}}^1$

素因数の和:593

約数の個数: 32

約数和(自身を含む): 30750720

約数和(自身を除く): 11805003

約数列:

[1, 3, 7, 19, 21, 57, 103, 133, 309, 399, 461, 721, 1383, 1957, 2163, 3227, 5871, 8759, 9681, 13699, 26277, 41097, 47483, 61313, 142449, 183939, 332381, 902177, 997143, 2706531, 6315239, 18945717]

約数ペア:

[(1, 18945717), (3, 6315239), (7, 2706531), (19, 997143), (21, 902177), (57, 332381), (103, 183939), (133, 142449), (309, 61313), (399, 47483), (461, 41097), (721, 26277), (1383, 13699), (1957, 9681), (2163, 8759), (3227, 5871)]