19955799

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{487}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 30070560

約数和(自身を除く): 10114761

約数列:

[1, 3, 9, 29, 87, 157, 261, 471, 487, 1413, 1461, 4383, 4553, 13659, 14123, 40977, 42369, 76459, 127107, 229377, 688131, 2217311, 6651933, 19955799]

約数ペア:

[(1, 19955799), (3, 6651933), (9, 2217311), (29, 688131), (87, 229377), (157, 127107), (261, 76459), (471, 42369), (487, 40977), (1413, 14123), (1461, 13659), (4383, 4553)]