21108957

素因数分解:

$3^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1\times {\mathrm{227}}^1$

素因数の和:592

約数の個数: 16

約数和(自身を含む): 28600320

約数和(自身を除く): 7491363

約数列:

[1, 3, 139, 223, 227, 417, 669, 681, 30997, 31553, 50621, 92991, 94659, 151863, 7036319, 21108957]

約数ペア:

[(1, 21108957), (3, 7036319), (139, 151863), (223, 94659), (227, 92991), (417, 50621), (669, 31553), (681, 30997)]