21536080

素因数分解:

$2^4\times 5^1\times {\mathrm{269201}}^1$

素因数の和:269214

約数の個数: 20

約数和(自身を含む): 50071572

約数和(自身を除く): 28535492

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269201, 538402, 1076804, 1346005, 2153608, 2692010, 4307216, 5384020, 10768040, 21536080]

約数ペア:

[(1, 21536080), (2, 10768040), (4, 5384020), (5, 4307216), (8, 2692010), (10, 2153608), (16, 1346005), (20, 1076804), (40, 538402), (80, 269201)]