19646995

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1\times {\mathrm{401}}^1$

素因数の和:686

約数の個数: 16

約数和(自身を含む): 24312960

約数和(自身を除く): 4665965

約数列:

[1, 5, 41, 205, 239, 401, 1195, 2005, 9799, 16441, 48995, 82205, 95839, 479195, 3929399, 19646995]

約数ペア:

[(1, 19646995), (5, 3929399), (41, 479195), (205, 95839), (239, 82205), (401, 48995), (1195, 16441), (2005, 9799)]