211428

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{839}}^1$

素因数の和:856

約数の個数: 36

約数和(自身を含む): 611520

約数和(自身を除く): 400092

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 839, 1678, 2517, 3356, 5034, 5873, 7551, 10068, 11746, 15102, 17619, 23492, 30204, 35238, 52857, 70476, 105714, 211428]

約数ペア:

[(1, 211428), (2, 105714), (3, 70476), (4, 52857), (6, 35238), (7, 30204), (9, 23492), (12, 17619), (14, 15102), (18, 11746), (21, 10068), (28, 7551), (36, 5873), (42, 5034), (63, 3356), (84, 2517), (126, 1678), (252, 839)]