19640015

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{12161}}^1$

素因数の和:12202

約数の個数: 16

約数和(自身を含む): 26269920

約数和(自身を除く): 6629905

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 12161, 60805, 206737, 231059, 1033685, 1155295, 3928003, 19640015]

約数ペア:

[(1, 19640015), (5, 3928003), (17, 1155295), (19, 1033685), (85, 231059), (95, 206737), (323, 60805), (1615, 12161)]