81642800

素因数分解:

$2^4\times 5^2\times {\mathrm{204107}}^1$

素因数の和:204125

約数の個数: 30

約数和(自身を含む): 196147788

約数和(自身を除く): 114504988

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 204107, 408214, 816428, 1020535, 1632856, 2041070, 3265712, 4082140, 5102675, 8164280, 10205350, 16328560, 20410700, 40821400, 81642800]

約数ペア:

[(1, 81642800), (2, 40821400), (4, 20410700), (5, 16328560), (8, 10205350), (10, 8164280), (16, 5102675), (20, 4082140), (25, 3265712), (40, 2041070), (50, 1632856), (80, 1020535), (100, 816428), (200, 408214), (400, 204107)]