19636420

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{9721}}^1$

素因数の和:9831

約数の個数: 24

約数和(自身を含む): 41649048

約数和(自身を除く): 22012628

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 9721, 19442, 38884, 48605, 97210, 194420, 981821, 1963642, 3927284, 4909105, 9818210, 19636420]

約数ペア:

[(1, 19636420), (2, 9818210), (4, 4909105), (5, 3927284), (10, 1963642), (20, 981821), (101, 194420), (202, 97210), (404, 48605), (505, 38884), (1010, 19442), (2020, 9721)]