21021610

素因数分解:

$2^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{7481}}^1$

素因数の和:7769

約数の個数: 16

約数和(自身を含む): 37978632

約数和(自身を除く): 16957022

約数列:

[1, 2, 5, 10, 281, 562, 1405, 2810, 7481, 14962, 37405, 74810, 2102161, 4204322, 10510805, 21021610]

約数ペア:

[(1, 21021610), (2, 10510805), (5, 4204322), (10, 2102161), (281, 74810), (562, 37405), (1405, 14962), (2810, 7481)]