20856944

素因数分解:

$2^4\times {\mathrm{281}}^1\times {\mathrm{4639}}^1$

素因数の和:4928

約数の個数: 20

約数和(自身を含む): 40562880

約数和(自身を除く): 19705936

約数列:

[1, 2, 4, 8, 16, 281, 562, 1124, 2248, 4496, 4639, 9278, 18556, 37112, 74224, 1303559, 2607118, 5214236, 10428472, 20856944]

約数ペア:

[(1, 20856944), (2, 10428472), (4, 5214236), (8, 2607118), (16, 1303559), (281, 74224), (562, 37112), (1124, 18556), (2248, 9278), (4496, 4639)]