20993196

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{491}}^1\times {\mathrm{509}}^1$

素因数の和:1014

約数の個数: 48

約数和(自身を含む): 56206080

約数和(自身を除く): 35212884

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 491, 509, 982, 1018, 1473, 1527, 1964, 2036, 2946, 3054, 3437, 3563, 5892, 6108, 6874, 7126, 10311, 10689, 13748, 14252, 20622, 21378, 41244, 42756, 249919, 499838, 749757, 999676, 1499514, 1749433, 2999028, 3498866, 5248299, 6997732, 10496598, 20993196]

約数ペア:

[(1, 20993196), (2, 10496598), (3, 6997732), (4, 5248299), (6, 3498866), (7, 2999028), (12, 1749433), (14, 1499514), (21, 999676), (28, 749757), (42, 499838), (84, 249919), (491, 42756), (509, 41244), (982, 21378), (1018, 20622), (1473, 14252), (1527, 13748), (1964, 10689), (2036, 10311), (2946, 7126), (3054, 6874), (3437, 6108), (3563, 5892)]