21888080

素因数分解:

$2^4\times 5^1\times {\mathrm{273601}}^1$

素因数の和:273614

約数の個数: 20

約数和(自身を含む): 50889972

約数和(自身を除く): 29001892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 273601, 547202, 1094404, 1368005, 2188808, 2736010, 4377616, 5472020, 10944040, 21888080]

約数ペア:

[(1, 21888080), (2, 10944040), (4, 5472020), (5, 4377616), (8, 2736010), (10, 2188808), (16, 1368005), (20, 1094404), (40, 547202), (80, 273601)]