20765560

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{12073}}^1$

素因数の和:12127

約数の個数: 32

約数和(自身を含む): 47813040

約数和(自身を除く): 27047480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 12073, 24146, 48292, 60365, 96584, 120730, 241460, 482920, 519139, 1038278, 2076556, 2595695, 4153112, 5191390, 10382780, 20765560]

約数ペア:

[(1, 20765560), (2, 10382780), (4, 5191390), (5, 4153112), (8, 2595695), (10, 2076556), (20, 1038278), (40, 519139), (43, 482920), (86, 241460), (172, 120730), (215, 96584), (344, 60365), (430, 48292), (860, 24146), (1720, 12073)]