154885580

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{19507}}^1$

素因数の和:19913

約数の個数: 24

約数和(自身を含む): 326095728

約数和(自身を除く): 171210148

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 19507, 39014, 78028, 97535, 195070, 390140, 7744279, 15488558, 30977116, 38721395, 77442790, 154885580]

約数ペア:

[(1, 154885580), (2, 77442790), (4, 38721395), (5, 30977116), (10, 15488558), (20, 7744279), (397, 390140), (794, 195070), (1588, 97535), (1985, 78028), (3970, 39014), (7940, 19507)]