20585456

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18121}}^1$

素因数の和:18200

約数の個数: 20

約数和(自身を含む): 40448304

約数和(自身を除く): 19862848

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18121, 36242, 72484, 144968, 289936, 1286591, 2573182, 5146364, 10292728, 20585456]

約数ペア:

[(1, 20585456), (2, 10292728), (4, 5146364), (8, 2573182), (16, 1286591), (71, 289936), (142, 144968), (284, 72484), (568, 36242), (1136, 18121)]