18801517

素因数分解:

$7^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{293}}^1$

素因数の和:492

約数の個数: 16

約数和(自身を含む): 22014720

約数和(自身を除く): 3213203

約数列:

[1, 7, 89, 103, 293, 623, 721, 2051, 9167, 26077, 30179, 64169, 182539, 211253, 2685931, 18801517]

約数ペア:

[(1, 18801517), (7, 2685931), (89, 211253), (103, 182539), (293, 64169), (623, 30179), (721, 26077), (2051, 9167)]