19725784

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{189671}}^1$

素因数の和:189690

約数の個数: 16

約数和(自身を含む): 39831120

約数和(自身を除く): 20105336

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 189671, 379342, 758684, 1517368, 2465723, 4931446, 9862892, 19725784]

約数ペア:

[(1, 19725784), (2, 9862892), (4, 4931446), (8, 2465723), (13, 1517368), (26, 758684), (52, 379342), (104, 189671)]