28965860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2687}}^1$

素因数の和:2721

約数の個数: 72

約数和(自身を含む): 77220864

約数和(自身を除く): 48255004

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 2156, 2687, 2695, 5374, 5390, 10748, 10780, 13435, 18809, 26870, 29557, 37618, 53740, 59114, 75236, 94045, 118228, 131663, 147785, 188090, 206899, 263326, 295570, 376180, 413798, 526652, 591140, 658315, 827596, 1034495, 1316630, 1448293, 2068990, 2633260, 2896586, 4137980, 5793172, 7241465, 14482930, 28965860]

約数ペア:

[(1, 28965860), (2, 14482930), (4, 7241465), (5, 5793172), (7, 4137980), (10, 2896586), (11, 2633260), (14, 2068990), (20, 1448293), (22, 1316630), (28, 1034495), (35, 827596), (44, 658315), (49, 591140), (55, 526652), (70, 413798), (77, 376180), (98, 295570), (110, 263326), (140, 206899), (154, 188090), (196, 147785), (220, 131663), (245, 118228), (308, 94045), (385, 75236), (490, 59114), (539, 53740), (770, 37618), (980, 29557), (1078, 26870), (1540, 18809), (2156, 13435), (2687, 10780), (2695, 10748), (5374, 5390)]