19965925

素因数分解:

$5^2\times 7^1\times {\mathrm{271}}^1\times {\mathrm{421}}^1$

素因数の和:709

約数の個数: 24

約数和(自身を含む): 28466432

約数和(自身を除く): 8500507

約数列:

[1, 5, 7, 25, 35, 175, 271, 421, 1355, 1897, 2105, 2947, 6775, 9485, 10525, 14735, 47425, 73675, 114091, 570455, 798637, 2852275, 3993185, 19965925]

約数ペア:

[(1, 19965925), (5, 3993185), (7, 2852275), (25, 798637), (35, 570455), (175, 114091), (271, 73675), (421, 47425), (1355, 14735), (1897, 10525), (2105, 9485), (2947, 6775)]