20989548

素因数分解:

$2^2\times 3^2\times {\mathrm{107}}^1\times {\mathrm{5449}}^1$

素因数の和:5566

約数の個数: 36

約数和(自身を含む): 53562600

約数和(自身を除く): 32573052

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 107, 214, 321, 428, 642, 963, 1284, 1926, 3852, 5449, 10898, 16347, 21796, 32694, 49041, 65388, 98082, 196164, 583043, 1166086, 1749129, 2332172, 3498258, 5247387, 6996516, 10494774, 20989548]

約数ペア:

[(1, 20989548), (2, 10494774), (3, 6996516), (4, 5247387), (6, 3498258), (9, 2332172), (12, 1749129), (18, 1166086), (36, 583043), (107, 196164), (214, 98082), (321, 65388), (428, 49041), (642, 32694), (963, 21796), (1284, 16347), (1926, 10898), (3852, 5449)]