21004012

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{1021}}^1$

素因数の和:1201

約数の個数: 24

約数和(自身を含む): 38059280

約数和(自身を除く): 17055268

約数列:

[1, 2, 4, 37, 74, 139, 148, 278, 556, 1021, 2042, 4084, 5143, 10286, 20572, 37777, 75554, 141919, 151108, 283838, 567676, 5251003, 10502006, 21004012]

約数ペア:

[(1, 21004012), (2, 10502006), (4, 5251003), (37, 567676), (74, 283838), (139, 151108), (148, 141919), (278, 75554), (556, 37777), (1021, 20572), (2042, 10286), (4084, 5143)]