20327832440

素因数分解:

$2^3\times 5^1\times {\mathrm{1721}}^1\times {\mathrm{295291}}^1$

素因数の和:297023

約数の個数: 32

約数和(自身を含む): 45764354160

約数和(自身を除く): 25436521720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1721, 3442, 6884, 8605, 13768, 17210, 34420, 68840, 295291, 590582, 1181164, 1476455, 2362328, 2952910, 5905820, 11811640, 508195811, 1016391622, 2032783244, 2540979055, 4065566488, 5081958110, 10163916220, 20327832440]

約数ペア:

[(1, 20327832440), (2, 10163916220), (4, 5081958110), (5, 4065566488), (8, 2540979055), (10, 2032783244), (20, 1016391622), (40, 508195811), (1721, 11811640), (3442, 5905820), (6884, 2952910), (8605, 2362328), (13768, 1476455), (17210, 1181164), (34420, 590582), (68840, 295291)]