20559778

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{1597}}^1$

素因数の和:1797

約数の個数: 16

約数和(自身を含む): 31812984

約数和(自身を除く): 11253206

約数列:

[1, 2, 41, 82, 157, 314, 1597, 3194, 6437, 12874, 65477, 130954, 250729, 501458, 10279889, 20559778]

約数ペア:

[(1, 20559778), (2, 10279889), (41, 501458), (82, 250729), (157, 130954), (314, 65477), (1597, 12874), (3194, 6437)]