18819853

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:444

約数の個数: 16

約数和(自身を含む): 20978496

約数和(自身を除く): 2158643

約数列:

[1, 13, 43, 131, 257, 559, 1703, 3341, 5633, 11051, 33667, 73229, 143663, 437671, 1447681, 18819853]

約数ペア:

[(1, 18819853), (13, 1447681), (43, 437671), (131, 143663), (257, 73229), (559, 33667), (1703, 11051), (3341, 5633)]