20174950960

素因数分解:

$2^4\times 5^1\times {\mathrm{1973}}^1\times {\mathrm{127819}}^1$

素因数の和:129805

約数の個数: 40

約数和(自身を含む): 46930902480

約数和(自身を除く): 26755951520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1973, 3946, 7892, 9865, 15784, 19730, 31568, 39460, 78920, 127819, 157840, 255638, 511276, 639095, 1022552, 1278190, 2045104, 2556380, 5112760, 10225520, 252186887, 504373774, 1008747548, 1260934435, 2017495096, 2521868870, 4034990192, 5043737740, 10087475480, 20174950960]

約数ペア:

[(1, 20174950960), (2, 10087475480), (4, 5043737740), (5, 4034990192), (8, 2521868870), (10, 2017495096), (16, 1260934435), (20, 1008747548), (40, 504373774), (80, 252186887), (1973, 10225520), (3946, 5112760), (7892, 2556380), (9865, 2045104), (15784, 1278190), (19730, 1022552), (31568, 639095), (39460, 511276), (78920, 255638), (127819, 157840)]