21261584

素因数分解:

$2^4\times {\mathrm{281}}^1\times {\mathrm{4729}}^1$

素因数の和:5018

約数の個数: 20

約数和(自身を含む): 41349660

約数和(自身を除く): 20088076

約数列:

[1, 2, 4, 8, 16, 281, 562, 1124, 2248, 4496, 4729, 9458, 18916, 37832, 75664, 1328849, 2657698, 5315396, 10630792, 21261584]

約数ペア:

[(1, 21261584), (2, 10630792), (4, 5315396), (8, 2657698), (16, 1328849), (281, 75664), (562, 37832), (1124, 18916), (2248, 9458), (4496, 4729)]