20721092

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{13963}}^1$

素因数の和:14027

約数の個数: 24

約数和(自身を含む): 42227136

約数和(自身を除く): 21506044

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 371, 742, 1484, 13963, 27926, 55852, 97741, 195482, 390964, 740039, 1480078, 2960156, 5180273, 10360546, 20721092]

約数ペア:

[(1, 20721092), (2, 10360546), (4, 5180273), (7, 2960156), (14, 1480078), (28, 740039), (53, 390964), (106, 195482), (212, 97741), (371, 55852), (742, 27926), (1484, 13963)]