2540380

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1789}}^1$

素因数の和:1869

約数の個数: 24

約数和(自身を含む): 5412960

約数和(自身を除く): 2872580

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 1789, 3578, 7156, 8945, 17890, 35780, 127019, 254038, 508076, 635095, 1270190, 2540380]

約数ペア:

[(1, 2540380), (2, 1270190), (4, 635095), (5, 508076), (10, 254038), (20, 127019), (71, 35780), (142, 17890), (284, 8945), (355, 7156), (710, 3578), (1420, 1789)]