287740990

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{405269}}^1$

素因数の和:405347

約数の個数: 16

約数和(自身を含む): 525229920

約数和(自身を除く): 237488930

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 405269, 810538, 2026345, 4052690, 28774099, 57548198, 143870495, 287740990]

約数ペア:

[(1, 287740990), (2, 143870495), (5, 57548198), (10, 28774099), (71, 4052690), (142, 2026345), (355, 810538), (710, 405269)]