20143900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4111}}^1$

素因数の和:4139

約数の個数: 54

約数和(自身を含む): 50861328

約数和(自身を除く): 30717428

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, 4111, 4900, 8222, 16444, 20555, 28777, 41110, 57554, 82220, 102775, 115108, 143885, 201439, 205550, 287770, 402878, 411100, 575540, 719425, 805756, 1007195, 1438850, 2014390, 2877700, 4028780, 5035975, 10071950, 20143900]

約数ペア:

[(1, 20143900), (2, 10071950), (4, 5035975), (5, 4028780), (7, 2877700), (10, 2014390), (14, 1438850), (20, 1007195), (25, 805756), (28, 719425), (35, 575540), (49, 411100), (50, 402878), (70, 287770), (98, 205550), (100, 201439), (140, 143885), (175, 115108), (196, 102775), (245, 82220), (350, 57554), (490, 41110), (700, 28777), (980, 20555), (1225, 16444), (2450, 8222), (4111, 4900)]