21139986

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{5189}}^1$

素因数の和:5298

約数の個数: 32

約数和(自身を含む): 48827520

約数和(自身を除く): 27687534

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 97, 194, 291, 582, 679, 1358, 2037, 4074, 5189, 10378, 15567, 31134, 36323, 72646, 108969, 217938, 503333, 1006666, 1509999, 3019998, 3523331, 7046662, 10569993, 21139986]

約数ペア:

[(1, 21139986), (2, 10569993), (3, 7046662), (6, 3523331), (7, 3019998), (14, 1509999), (21, 1006666), (42, 503333), (97, 217938), (194, 108969), (291, 72646), (582, 36323), (679, 31134), (1358, 15567), (2037, 10378), (4074, 5189)]