20997564

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{249971}}^1$

素因数の和:249985

約数の個数: 24

約数和(自身を含む): 55993728

約数和(自身を除く): 34996164

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 249971, 499942, 749913, 999884, 1499826, 1749797, 2999652, 3499594, 5249391, 6999188, 10498782, 20997564]

約数ペア:

[(1, 20997564), (2, 10498782), (3, 6999188), (4, 5249391), (6, 3499594), (7, 2999652), (12, 1749797), (14, 1499826), (21, 999884), (28, 749913), (42, 499942), (84, 249971)]