20017855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{27997}}^1$

素因数の和:28026

約数の個数: 16

約数和(自身を含む): 28221984

約数和(自身を除く): 8204129

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 27997, 139985, 307967, 363961, 1539835, 1819805, 4003571, 20017855]

約数ペア:

[(1, 20017855), (5, 4003571), (11, 1819805), (13, 1539835), (55, 363961), (65, 307967), (143, 139985), (715, 27997)]