20669300

素因数分解:

$2^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{1487}}^1$

素因数の和:1640

約数の個数: 36

約数和(自身を含む): 45205440

約数和(自身を除く): 24536140

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 139, 278, 556, 695, 1390, 1487, 2780, 2974, 3475, 5948, 6950, 7435, 13900, 14870, 29740, 37175, 74350, 148700, 206693, 413386, 826772, 1033465, 2066930, 4133860, 5167325, 10334650, 20669300]

約数ペア:

[(1, 20669300), (2, 10334650), (4, 5167325), (5, 4133860), (10, 2066930), (20, 1033465), (25, 826772), (50, 413386), (100, 206693), (139, 148700), (278, 74350), (556, 37175), (695, 29740), (1390, 14870), (1487, 13900), (2780, 7435), (2974, 6950), (3475, 5948)]