80291440

素因数分解:

$2^4\times 5^1\times {\mathrm{983}}^1\times {\mathrm{1021}}^1$

素因数の和:2017

約数の個数: 40

約数和(自身を含む): 187050528

約数和(自身を除く): 106759088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 983, 1021, 1966, 2042, 3932, 4084, 4915, 5105, 7864, 8168, 9830, 10210, 15728, 16336, 19660, 20420, 39320, 40840, 78640, 81680, 1003643, 2007286, 4014572, 5018215, 8029144, 10036430, 16058288, 20072860, 40145720, 80291440]

約数ペア:

[(1, 80291440), (2, 40145720), (4, 20072860), (5, 16058288), (8, 10036430), (10, 8029144), (16, 5018215), (20, 4014572), (40, 2007286), (80, 1003643), (983, 81680), (1021, 78640), (1966, 40840), (2042, 39320), (3932, 20420), (4084, 19660), (4915, 16336), (5105, 15728), (7864, 10210), (8168, 9830)]