1304980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{919}}^1$

素因数の和:999

約数の個数: 24

約数和(自身を含む): 2782080

約数和(自身を除く): 1477100

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 919, 1420, 1838, 3676, 4595, 9190, 18380, 65249, 130498, 260996, 326245, 652490, 1304980]

約数ペア:

[(1, 1304980), (2, 652490), (4, 326245), (5, 260996), (10, 130498), (20, 65249), (71, 18380), (142, 9190), (284, 4595), (355, 3676), (710, 1838), (919, 1420)]