18540080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17827}}^1$

素因数の和:17853

約数の個数: 40

約数和(自身を含む): 46424112

約数和(自身を除く): 27884032

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 17827, 35654, 71308, 89135, 142616, 178270, 231751, 285232, 356540, 463502, 713080, 927004, 1158755, 1426160, 1854008, 2317510, 3708016, 4635020, 9270040, 18540080]

約数ペア:

[(1, 18540080), (2, 9270040), (4, 4635020), (5, 3708016), (8, 2317510), (10, 1854008), (13, 1426160), (16, 1158755), (20, 927004), (26, 713080), (40, 463502), (52, 356540), (65, 285232), (80, 231751), (104, 178270), (130, 142616), (208, 89135), (260, 71308), (520, 35654), (1040, 17827)]