18036880

素因数分解:

$2^4\times 5^1\times {\mathrm{225461}}^1$

素因数の和:225474

約数の個数: 20

約数和(自身を含む): 41935932

約数和(自身を除く): 23899052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 225461, 450922, 901844, 1127305, 1803688, 2254610, 3607376, 4509220, 9018440, 18036880]

約数ペア:

[(1, 18036880), (2, 9018440), (4, 4509220), (5, 3607376), (8, 2254610), (10, 1803688), (16, 1127305), (20, 901844), (40, 450922), (80, 225461)]