21778420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37549}}^1$

素因数の和:37587

約数の個数: 24

約数和(自身を含む): 47313000

約数和(自身を除く): 25534580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 37549, 75098, 150196, 187745, 375490, 750980, 1088921, 2177842, 4355684, 5444605, 10889210, 21778420]

約数ペア:

[(1, 21778420), (2, 10889210), (4, 5444605), (5, 4355684), (10, 2177842), (20, 1088921), (29, 750980), (58, 375490), (116, 187745), (145, 150196), (290, 75098), (580, 37549)]