19577840

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2423}}^1$

素因数の和:2537

約数の個数: 40

約数和(自身を含む): 45988128

約数和(自身を除く): 26410288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2423, 4040, 4846, 8080, 9692, 12115, 19384, 24230, 38768, 48460, 96920, 193840, 244723, 489446, 978892, 1223615, 1957784, 2447230, 3915568, 4894460, 9788920, 19577840]

約数ペア:

[(1, 19577840), (2, 9788920), (4, 4894460), (5, 3915568), (8, 2447230), (10, 1957784), (16, 1223615), (20, 978892), (40, 489446), (80, 244723), (101, 193840), (202, 96920), (404, 48460), (505, 38768), (808, 24230), (1010, 19384), (1616, 12115), (2020, 9692), (2423, 8080), (4040, 4846)]