21073724

素因数分解:

$2^2\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1361}}^1$

素因数の和:1458

約数の個数: 36

約数和(自身を含む): 43475040

約数和(自身を除く): 22401316

約数列:

[1, 2, 4, 7, 14, 28, 49, 79, 98, 158, 196, 316, 553, 1106, 1361, 2212, 2722, 3871, 5444, 7742, 9527, 15484, 19054, 38108, 66689, 107519, 133378, 215038, 266756, 430076, 752633, 1505266, 3010532, 5268431, 10536862, 21073724]

約数ペア:

[(1, 21073724), (2, 10536862), (4, 5268431), (7, 3010532), (14, 1505266), (28, 752633), (49, 430076), (79, 266756), (98, 215038), (158, 133378), (196, 107519), (316, 66689), (553, 38108), (1106, 19054), (1361, 15484), (2212, 9527), (2722, 7742), (3871, 5444)]