19807263

素因数分解:

$3^2\times 7^1\times {\mathrm{314401}}^1$

素因数の和:314414

約数の個数: 12

約数和(自身を含む): 32697808

約数和(自身を除く): 12890545

約数列:

[1, 3, 7, 9, 21, 63, 314401, 943203, 2200807, 2829609, 6602421, 19807263]

約数ペア:

[(1, 19807263), (3, 6602421), (7, 2829609), (9, 2200807), (21, 943203), (63, 314401)]