16121721

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{691}}^1$

素因数の和:813

約数の個数: 32

約数和(自身を含む): 27104256

約数和(自身を除く): 10982535

約数列:

[1, 3, 7, 11, 21, 33, 77, 101, 231, 303, 691, 707, 1111, 2073, 2121, 3333, 4837, 7601, 7777, 14511, 22803, 23331, 53207, 69791, 159621, 209373, 488537, 767701, 1465611, 2303103, 5373907, 16121721]

約数ペア:

[(1, 16121721), (3, 5373907), (7, 2303103), (11, 1465611), (21, 767701), (33, 488537), (77, 209373), (101, 159621), (231, 69791), (303, 53207), (691, 23331), (707, 22803), (1111, 14511), (2073, 7777), (2121, 7601), (3333, 4837)]