21036436

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{66571}}^1$

素因数の和:66654

約数の個数: 12

約数和(自身を含む): 37280320

約数和(自身を除く): 16243884

約数列:

[1, 2, 4, 79, 158, 316, 66571, 133142, 266284, 5259109, 10518218, 21036436]

約数ペア:

[(1, 21036436), (2, 10518218), (4, 5259109), (79, 266284), (158, 133142), (316, 66571)]