19991152

素因数分解:

$2^4\times {\mathrm{523}}^1\times {\mathrm{2389}}^1$

素因数の和:2920

約数の個数: 20

約数和(自身を含む): 38823160

約数和(自身を除く): 18832008

約数列:

[1, 2, 4, 8, 16, 523, 1046, 2092, 2389, 4184, 4778, 8368, 9556, 19112, 38224, 1249447, 2498894, 4997788, 9995576, 19991152]

約数ペア:

[(1, 19991152), (2, 9995576), (4, 4997788), (8, 2498894), (16, 1249447), (523, 38224), (1046, 19112), (2092, 9556), (2389, 8368), (4184, 4778)]