21021268

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{66523}}^1$

素因数の和:66606

約数の個数: 12

約数和(自身を含む): 37253440

約数和(自身を除く): 16232172

約数列:

[1, 2, 4, 79, 158, 316, 66523, 133046, 266092, 5255317, 10510634, 21021268]

約数ペア:

[(1, 21021268), (2, 10510634), (4, 5255317), (79, 266092), (158, 133046), (316, 66523)]