10891720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{5557}}^1$

素因数の和:5582

約数の個数: 48

約数和(自身を含む): 28512540

約数和(自身を除く): 17620820

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 5557, 11114, 22228, 27785, 38899, 44456, 55570, 77798, 111140, 155596, 194495, 222280, 272293, 311192, 388990, 544586, 777980, 1089172, 1361465, 1555960, 2178344, 2722930, 5445860, 10891720]

約数ペア:

[(1, 10891720), (2, 5445860), (4, 2722930), (5, 2178344), (7, 1555960), (8, 1361465), (10, 1089172), (14, 777980), (20, 544586), (28, 388990), (35, 311192), (40, 272293), (49, 222280), (56, 194495), (70, 155596), (98, 111140), (140, 77798), (196, 55570), (245, 44456), (280, 38899), (392, 27785), (490, 22228), (980, 11114), (1960, 5557)]