21320522

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1\times {\mathrm{1021}}^1$

素因数の和:1273

約数の個数: 16

約数和(自身を含む): 32781672

約数和(自身を除く): 11461150

約数列:

[1, 2, 53, 106, 197, 394, 1021, 2042, 10441, 20882, 54113, 108226, 201137, 402274, 10660261, 21320522]

約数ペア:

[(1, 21320522), (2, 10660261), (53, 402274), (106, 201137), (197, 108226), (394, 54113), (1021, 20882), (2042, 10441)]