21900978

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{2087}}^1$

素因数の和:2159

約数の個数: 48

約数和(自身を含む): 52767936

約数和(自身を除く): 30866958

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 53, 66, 99, 106, 159, 198, 318, 477, 583, 954, 1166, 1749, 2087, 3498, 4174, 5247, 6261, 10494, 12522, 18783, 22957, 37566, 45914, 68871, 110611, 137742, 206613, 221222, 331833, 413226, 663666, 995499, 1216721, 1990998, 2433442, 3650163, 7300326, 10950489, 21900978]

約数ペア:

[(1, 21900978), (2, 10950489), (3, 7300326), (6, 3650163), (9, 2433442), (11, 1990998), (18, 1216721), (22, 995499), (33, 663666), (53, 413226), (66, 331833), (99, 221222), (106, 206613), (159, 137742), (198, 110611), (318, 68871), (477, 45914), (583, 37566), (954, 22957), (1166, 18783), (1749, 12522), (2087, 10494), (3498, 6261), (4174, 5247)]