647577321

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{42719}}^1$

素因数の和:42916

約数の個数: 16

約数和(自身を含む): 896778240

約数和(自身を除く): 249200919

約数列:

[1, 3, 31, 93, 163, 489, 5053, 15159, 42719, 128157, 1324289, 3972867, 6963197, 20889591, 215859107, 647577321]

約数ペア:

[(1, 647577321), (3, 215859107), (31, 20889591), (93, 6963197), (163, 3972867), (489, 1324289), (5053, 128157), (15159, 42719)]