21988055

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{1549}}^1$

素因数の和:1738

約数の個数: 16

約数和(自身を含む): 28123200

約数和(自身を除く): 6135145

約数列:

[1, 5, 17, 85, 167, 835, 1549, 2839, 7745, 14195, 26333, 131665, 258683, 1293415, 4397611, 21988055]

約数ペア:

[(1, 21988055), (5, 4397611), (17, 1293415), (85, 258683), (167, 131665), (835, 26333), (1549, 14195), (2839, 7745)]