20940724

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 43400448

約数和(自身を除く): 22459724

約数列:

[1, 2, 4, 7, 14, 28, 53, 103, 106, 137, 206, 212, 274, 371, 412, 548, 721, 742, 959, 1442, 1484, 1918, 2884, 3836, 5459, 7261, 10918, 14111, 14522, 21836, 28222, 29044, 38213, 50827, 56444, 76426, 98777, 101654, 152852, 197554, 203308, 395108, 747883, 1495766, 2991532, 5235181, 10470362, 20940724]

約数ペア:

[(1, 20940724), (2, 10470362), (4, 5235181), (7, 2991532), (14, 1495766), (28, 747883), (53, 395108), (103, 203308), (106, 197554), (137, 152852), (206, 101654), (212, 98777), (274, 76426), (371, 56444), (412, 50827), (548, 38213), (721, 29044), (742, 28222), (959, 21836), (1442, 14522), (1484, 14111), (1918, 10918), (2884, 7261), (3836, 5459)]