19785339

素因数分解:

$3^2\times 7^1\times {\mathrm{509}}^1\times {\mathrm{617}}^1$

素因数の和:1139

約数の個数: 24

約数和(自身を含む): 32778720

約数和(自身を除く): 12993381

約数列:

[1, 3, 7, 9, 21, 63, 509, 617, 1527, 1851, 3563, 4319, 4581, 5553, 10689, 12957, 32067, 38871, 314053, 942159, 2198371, 2826477, 6595113, 19785339]

約数ペア:

[(1, 19785339), (3, 6595113), (7, 2826477), (9, 2198371), (21, 942159), (63, 314053), (509, 38871), (617, 32067), (1527, 12957), (1851, 10689), (3563, 5553), (4319, 4581)]