55580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{397}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 133728

約数和(自身を除く): 78148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 397, 794, 1588, 1985, 2779, 3970, 5558, 7940, 11116, 13895, 27790, 55580]

約数ペア:

[(1, 55580), (2, 27790), (4, 13895), (5, 11116), (7, 7940), (10, 5558), (14, 3970), (20, 2779), (28, 1985), (35, 1588), (70, 794), (140, 397)]