20155120

素因数分解:

$2^4\times 5^1\times {\mathrm{251939}}^1$

素因数の和:251952

約数の個数: 20

約数和(自身を含む): 46860840

約数和(自身を除く): 26705720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251939, 503878, 1007756, 1259695, 2015512, 2519390, 4031024, 5038780, 10077560, 20155120]

約数ペア:

[(1, 20155120), (2, 10077560), (4, 5038780), (5, 4031024), (8, 2519390), (10, 2015512), (16, 1259695), (20, 1007756), (40, 503878), (80, 251939)]