19772109

素因数分解:

$3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1999}}^1$

素因数の和:2169

約数の個数: 24

約数和(自身を含む): 32864000

約数和(自身を除く): 13091891

約数列:

[1, 3, 7, 9, 21, 63, 157, 471, 1099, 1413, 1999, 3297, 5997, 9891, 13993, 17991, 41979, 125937, 313843, 941529, 2196901, 2824587, 6590703, 19772109]

約数ペア:

[(1, 19772109), (3, 6590703), (7, 2824587), (9, 2196901), (21, 941529), (63, 313843), (157, 125937), (471, 41979), (1099, 17991), (1413, 13993), (1999, 9891), (3297, 5997)]