20890492

素因数分解:

$2^2\times 7^1\times {\mathrm{311}}^1\times {\mathrm{2399}}^1$

素因数の和:2721

約数の個数: 24

約数和(自身を含む): 41932800

約数和(自身を除く): 21042308

約数列:

[1, 2, 4, 7, 14, 28, 311, 622, 1244, 2177, 2399, 4354, 4798, 8708, 9596, 16793, 33586, 67172, 746089, 1492178, 2984356, 5222623, 10445246, 20890492]

約数ペア:

[(1, 20890492), (2, 10445246), (4, 5222623), (7, 2984356), (14, 1492178), (28, 746089), (311, 67172), (622, 33586), (1244, 16793), (2177, 9596), (2399, 8708), (4354, 4798)]