2157845193

素因数分解:

$3^2\times 7^2\times {\mathrm{4893073}}^1$

素因数の和:4893093

約数の個数: 18

約数和(自身を含む): 3625767834

約数和(自身を除く): 1467922641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 4893073, 14679219, 34251511, 44037657, 102754533, 239760577, 308263599, 719281731, 2157845193]

約数ペア:

[(1, 2157845193), (3, 719281731), (7, 308263599), (9, 239760577), (21, 102754533), (49, 44037657), (63, 34251511), (147, 14679219), (441, 4893073)]