20289993

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{461}}^1\times {\mathrm{863}}^1$

素因数の和:1344

約数の個数: 16

約数和(自身を含む): 28740096

約数和(自身を除く): 8450103

約数列:

[1, 3, 17, 51, 461, 863, 1383, 2589, 7837, 14671, 23511, 44013, 397843, 1193529, 6763331, 20289993]

約数ペア:

[(1, 20289993), (3, 6763331), (17, 1193529), (51, 397843), (461, 44013), (863, 23511), (1383, 14671), (2589, 7837)]