1981427

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:458

約数の個数: 16

約数和(自身を含む): 2445312

約数和(自身を除く): 463885

約数列:

[1, 7, 23, 31, 161, 217, 397, 713, 2779, 4991, 9131, 12307, 63917, 86149, 283061, 1981427]

約数ペア:

[(1, 1981427), (7, 283061), (23, 86149), (31, 63917), (161, 12307), (217, 9131), (397, 4991), (713, 2779)]