320804980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{225919}}^1$

素因数の和:225999

約数の個数: 24

約数和(自身を含む): 683182080

約数和(自身を除く): 362377100

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 225919, 451838, 903676, 1129595, 2259190, 4518380, 16040249, 32080498, 64160996, 80201245, 160402490, 320804980]

約数ペア:

[(1, 320804980), (2, 160402490), (4, 80201245), (5, 64160996), (10, 32080498), (20, 16040249), (71, 4518380), (142, 2259190), (284, 1129595), (355, 903676), (710, 451838), (1420, 225919)]