21055300

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4297}}^1$

素因数の和:4325

約数の個数: 54

約数和(自身を含む): 53161962

約数和(自身を除く): 32106662

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4297, 4900, 8594, 17188, 21485, 30079, 42970, 60158, 85940, 107425, 120316, 150395, 210553, 214850, 300790, 421106, 429700, 601580, 751975, 842212, 1052765, 1503950, 2105530, 3007900, 4211060, 5263825, 10527650, 21055300]

約数ペア:

[(1, 21055300), (2, 10527650), (4, 5263825), (5, 4211060), (7, 3007900), (10, 2105530), (14, 1503950), (20, 1052765), (25, 842212), (28, 751975), (35, 601580), (49, 429700), (50, 421106), (70, 300790), (98, 214850), (100, 210553), (140, 150395), (175, 120316), (196, 107425), (245, 85940), (350, 60158), (490, 42970), (700, 30079), (980, 21485), (1225, 17188), (2450, 8594), (4297, 4900)]