20878396

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1279}}^1$

素因数の和:1354

約数の個数: 48

約数和(自身を含む): 46448640

約数和(自身を除く): 25570244

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 53, 77, 106, 154, 212, 308, 371, 583, 742, 1166, 1279, 1484, 2332, 2558, 4081, 5116, 8162, 8953, 14069, 16324, 17906, 28138, 35812, 56276, 67787, 98483, 135574, 196966, 271148, 393932, 474509, 745657, 949018, 1491314, 1898036, 2982628, 5219599, 10439198, 20878396]

約数ペア:

[(1, 20878396), (2, 10439198), (4, 5219599), (7, 2982628), (11, 1898036), (14, 1491314), (22, 949018), (28, 745657), (44, 474509), (53, 393932), (77, 271148), (106, 196966), (154, 135574), (212, 98483), (308, 67787), (371, 56276), (583, 35812), (742, 28138), (1166, 17906), (1279, 16324), (1484, 14069), (2332, 8953), (2558, 8162), (4081, 5116)]