81988220

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{141359}}^1$

素因数の和:141397

約数の個数: 24

約数和(自身を含む): 178113600

約数和(自身を除く): 96125380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 141359, 282718, 565436, 706795, 1413590, 2827180, 4099411, 8198822, 16397644, 20497055, 40994110, 81988220]

約数ペア:

[(1, 81988220), (2, 40994110), (4, 20497055), (5, 16397644), (10, 8198822), (20, 4099411), (29, 2827180), (58, 1413590), (116, 706795), (145, 565436), (290, 282718), (580, 141359)]