820144

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{3943}}^1$

素因数の和:3964

約数の個数: 20

約数和(自身を含む): 1711696

約数和(自身を除く): 891552

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 3943, 7886, 15772, 31544, 51259, 63088, 102518, 205036, 410072, 820144]

約数ペア:

[(1, 820144), (2, 410072), (4, 205036), (8, 102518), (13, 63088), (16, 51259), (26, 31544), (52, 15772), (104, 7886), (208, 3943)]