28400140

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{7933}}^1$

素因数の和:8121

約数の個数: 24

約数和(自身を含む): 59981040

約数和(自身を除く): 31580900

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 7933, 15866, 31732, 39665, 79330, 158660, 1420007, 2840014, 5680028, 7100035, 14200070, 28400140]

約数ペア:

[(1, 28400140), (2, 14200070), (4, 7100035), (5, 5680028), (10, 2840014), (20, 1420007), (179, 158660), (358, 79330), (716, 39665), (895, 31732), (1790, 15866), (3580, 7933)]