21300426

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2381}}^1$

素因数の和:2467

約数の個数: 48

約数和(自身を含む): 53509248

約数和(自身を除く): 32208822

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 71, 126, 142, 213, 426, 497, 639, 994, 1278, 1491, 2381, 2982, 4473, 4762, 7143, 8946, 14286, 16667, 21429, 33334, 42858, 50001, 100002, 150003, 169051, 300006, 338102, 507153, 1014306, 1183357, 1521459, 2366714, 3042918, 3550071, 7100142, 10650213, 21300426]

約数ペア:

[(1, 21300426), (2, 10650213), (3, 7100142), (6, 3550071), (7, 3042918), (9, 2366714), (14, 1521459), (18, 1183357), (21, 1014306), (42, 507153), (63, 338102), (71, 300006), (126, 169051), (142, 150003), (213, 100002), (426, 50001), (497, 42858), (639, 33334), (994, 21429), (1278, 16667), (1491, 14286), (2381, 8946), (2982, 7143), (4473, 4762)]