20450075

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:527

約数の個数: 24

約数和(自身を含む): 26687280

約数和(自身を除く): 6237205

約数列:

[1, 5, 25, 29, 67, 145, 335, 421, 725, 1675, 1943, 2105, 9715, 10525, 12209, 28207, 48575, 61045, 141035, 305225, 705175, 818003, 4090015, 20450075]

約数ペア:

[(1, 20450075), (5, 4090015), (25, 818003), (29, 705175), (67, 305225), (145, 141035), (335, 61045), (421, 48575), (725, 28207), (1675, 12209), (1943, 10525), (2105, 9715)]