21000944840

素因数分解:

$2^3\times 5^1\times {\mathrm{1237}}^1\times {\mathrm{424433}}^1$

素因数の和:425681

約数の個数: 32

約数和(自身を含む): 47290436280

約数和(自身を除く): 26289491440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1237, 2474, 4948, 6185, 9896, 12370, 24740, 49480, 424433, 848866, 1697732, 2122165, 3395464, 4244330, 8488660, 16977320, 525023621, 1050047242, 2100094484, 2625118105, 4200188968, 5250236210, 10500472420, 21000944840]

約数ペア:

[(1, 21000944840), (2, 10500472420), (4, 5250236210), (5, 4200188968), (8, 2625118105), (10, 2100094484), (20, 1050047242), (40, 525023621), (1237, 16977320), (2474, 8488660), (4948, 4244330), (6185, 3395464), (9896, 2122165), (12370, 1697732), (24740, 848866), (49480, 424433)]