19643897

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1553}}^1$

素因数の和:1712

約数の個数: 16

約数和(自身を含む): 24366720

約数和(自身を除く): 4722823

約数列:

[1, 7, 13, 91, 139, 973, 1553, 1807, 10871, 12649, 20189, 141323, 215867, 1511069, 2806271, 19643897]

約数ペア:

[(1, 19643897), (7, 2806271), (13, 1511069), (91, 215867), (139, 141323), (973, 20189), (1553, 12649), (1807, 10871)]