19945388

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{1237}}^1$

素因数の和:1409

約数の個数: 24

約数和(自身を含む): 36397200

約数和(自身を除く): 16451812

約数列:

[1, 2, 4, 29, 58, 116, 139, 278, 556, 1237, 2474, 4031, 4948, 8062, 16124, 35873, 71746, 143492, 171943, 343886, 687772, 4986347, 9972694, 19945388]

約数ペア:

[(1, 19945388), (2, 9972694), (4, 4986347), (29, 687772), (58, 343886), (116, 171943), (139, 143492), (278, 71746), (556, 35873), (1237, 16124), (2474, 8062), (4031, 4948)]