19604900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4001}}^1$

素因数の和:4029

約数の個数: 54

約数和(自身を含む): 49500738

約数和(自身を除く): 29895838

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, 4001, 4900, 8002, 16004, 20005, 28007, 40010, 56014, 80020, 100025, 112028, 140035, 196049, 200050, 280070, 392098, 400100, 560140, 700175, 784196, 980245, 1400350, 1960490, 2800700, 3920980, 4901225, 9802450, 19604900]

約数ペア:

[(1, 19604900), (2, 9802450), (4, 4901225), (5, 3920980), (7, 2800700), (10, 1960490), (14, 1400350), (20, 980245), (25, 784196), (28, 700175), (35, 560140), (49, 400100), (50, 392098), (70, 280070), (98, 200050), (100, 196049), (140, 140035), (175, 112028), (196, 100025), (245, 80020), (350, 56014), (490, 40010), (700, 28007), (980, 20005), (1225, 16004), (2450, 8002), (4001, 4900)]