20137760

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2927}}^1$

素因数の和:2985

約数の個数: 48

約数和(自身を含む): 48698496

約数和(自身を除く): 28560736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 2927, 3440, 5854, 6880, 11708, 14635, 23416, 29270, 46832, 58540, 93664, 117080, 125861, 234160, 251722, 468320, 503444, 629305, 1006888, 1258610, 2013776, 2517220, 4027552, 5034440, 10068880, 20137760]

約数ペア:

[(1, 20137760), (2, 10068880), (4, 5034440), (5, 4027552), (8, 2517220), (10, 2013776), (16, 1258610), (20, 1006888), (32, 629305), (40, 503444), (43, 468320), (80, 251722), (86, 234160), (160, 125861), (172, 117080), (215, 93664), (344, 58540), (430, 46832), (688, 29270), (860, 23416), (1376, 14635), (1720, 11708), (2927, 6880), (3440, 5854)]