21029673

素因数分解:

$3^1\times 7^3\times {\mathrm{107}}^1\times {\mathrm{191}}^1$

素因数の和:322

約数の個数: 32

約数和(自身を含む): 33177600

約数和(自身を除く): 12147927

約数列:

[1, 3, 7, 21, 49, 107, 147, 191, 321, 343, 573, 749, 1029, 1337, 2247, 4011, 5243, 9359, 15729, 20437, 28077, 36701, 61311, 65513, 110103, 143059, 196539, 429177, 1001413, 3004239, 7009891, 21029673]

約数ペア:

[(1, 21029673), (3, 7009891), (7, 3004239), (21, 1001413), (49, 429177), (107, 196539), (147, 143059), (191, 110103), (321, 65513), (343, 61311), (573, 36701), (749, 28077), (1029, 20437), (1337, 15729), (2247, 9359), (4011, 5243)]