21000714

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1171}}^1$

素因数の和:1251

約数の個数: 48

約数和(自身を含む): 49702176

約数和(自身を除く): 28701462

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 61, 98, 122, 147, 183, 294, 366, 427, 854, 1171, 1281, 2342, 2562, 2989, 3513, 5978, 7026, 8197, 8967, 16394, 17934, 24591, 49182, 57379, 71431, 114758, 142862, 172137, 214293, 344274, 428586, 500017, 1000034, 1500051, 3000102, 3500119, 7000238, 10500357, 21000714]

約数ペア:

[(1, 21000714), (2, 10500357), (3, 7000238), (6, 3500119), (7, 3000102), (14, 1500051), (21, 1000034), (42, 500017), (49, 428586), (61, 344274), (98, 214293), (122, 172137), (147, 142862), (183, 114758), (294, 71431), (366, 57379), (427, 49182), (854, 24591), (1171, 17934), (1281, 16394), (2342, 8967), (2562, 8197), (2989, 7026), (3513, 5978)]