19420336

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1279}}^1$

素因数の和:1373

約数の個数: 40

約数和(自身を含む): 41108480

約数和(自身を除く): 21688144

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 73, 104, 146, 208, 292, 584, 949, 1168, 1279, 1898, 2558, 3796, 5116, 7592, 10232, 15184, 16627, 20464, 33254, 66508, 93367, 133016, 186734, 266032, 373468, 746936, 1213771, 1493872, 2427542, 4855084, 9710168, 19420336]

約数ペア:

[(1, 19420336), (2, 9710168), (4, 4855084), (8, 2427542), (13, 1493872), (16, 1213771), (26, 746936), (52, 373468), (73, 266032), (104, 186734), (146, 133016), (208, 93367), (292, 66508), (584, 33254), (949, 20464), (1168, 16627), (1279, 15184), (1898, 10232), (2558, 7592), (3796, 5116)]