20639795

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{19751}}^1$

素因数の和:19786

約数の個数: 16

約数和(自身を含む): 28442880

約数和(自身を除く): 7803085

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 19751, 98755, 217261, 375269, 1086305, 1876345, 4127959, 20639795]

約数ペア:

[(1, 20639795), (5, 4127959), (11, 1876345), (19, 1086305), (55, 375269), (95, 217261), (209, 98755), (1045, 19751)]