408156680

素因数分解:

$2^3\times 5^1\times {\mathrm{809}}^1\times {\mathrm{12613}}^1$

素因数の和:13433

約数の個数: 32

約数和(自身を含む): 919560600

約数和(自身を除く): 511403920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 809, 1618, 3236, 4045, 6472, 8090, 12613, 16180, 25226, 32360, 50452, 63065, 100904, 126130, 252260, 504520, 10203917, 20407834, 40815668, 51019585, 81631336, 102039170, 204078340, 408156680]

約数ペア:

[(1, 408156680), (2, 204078340), (4, 102039170), (5, 81631336), (8, 51019585), (10, 40815668), (20, 20407834), (40, 10203917), (809, 504520), (1618, 252260), (3236, 126130), (4045, 100904), (6472, 63065), (8090, 50452), (12613, 32360), (16180, 25226)]