203427880

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{5101}}^1$

素因数の和:6109

約数の個数: 32

約数和(自身を含む): 458261640

約数和(自身を除く): 254833760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1994, 3988, 4985, 5101, 7976, 9970, 10202, 19940, 20404, 25505, 39880, 40808, 51010, 102020, 204040, 5085697, 10171394, 20342788, 25428485, 40685576, 50856970, 101713940, 203427880]

約数ペア:

[(1, 203427880), (2, 101713940), (4, 50856970), (5, 40685576), (8, 25428485), (10, 20342788), (20, 10171394), (40, 5085697), (997, 204040), (1994, 102020), (3988, 51010), (4985, 40808), (5101, 39880), (7976, 25505), (9970, 20404), (10202, 19940)]