19806388

素因数分解:

$2^2\times 7^2\times {\mathrm{139}}^1\times {\mathrm{727}}^1$

素因数の和:884

約数の個数: 36

約数和(自身を含む): 40666080

約数和(自身を除く): 20859692

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 139, 196, 278, 556, 727, 973, 1454, 1946, 2908, 3892, 5089, 6811, 10178, 13622, 20356, 27244, 35623, 71246, 101053, 142492, 202106, 404212, 707371, 1414742, 2829484, 4951597, 9903194, 19806388]

約数ペア:

[(1, 19806388), (2, 9903194), (4, 4951597), (7, 2829484), (14, 1414742), (28, 707371), (49, 404212), (98, 202106), (139, 142492), (196, 101053), (278, 71246), (556, 35623), (727, 27244), (973, 20356), (1454, 13622), (1946, 10178), (2908, 6811), (3892, 5089)]