19800055

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{2293}}^1$

素因数の和:2466

約数の個数: 16

約数和(自身を含む): 26096544

約数和(自身を除く): 6296489

約数列:

[1, 5, 11, 55, 157, 785, 1727, 2293, 8635, 11465, 25223, 126115, 360001, 1800005, 3960011, 19800055]

約数ペア:

[(1, 19800055), (5, 3960011), (11, 1800005), (55, 360001), (157, 126115), (785, 25223), (1727, 11465), (2293, 8635)]