21181986

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{18679}}^1$

素因数の和:18700

約数の個数: 40

約数和(自身を含む): 54246720

約数和(自身を除く): 33064734

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 378, 567, 1134, 18679, 37358, 56037, 112074, 130753, 168111, 261506, 336222, 392259, 504333, 784518, 1008666, 1176777, 1512999, 2353554, 3025998, 3530331, 7060662, 10590993, 21181986]

約数ペア:

[(1, 21181986), (2, 10590993), (3, 7060662), (6, 3530331), (7, 3025998), (9, 2353554), (14, 1512999), (18, 1176777), (21, 1008666), (27, 784518), (42, 504333), (54, 392259), (63, 336222), (81, 261506), (126, 168111), (162, 130753), (189, 112074), (378, 56037), (567, 37358), (1134, 18679)]