3991281

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{6131}}^1$

素因数の和:6172

約数の個数: 16

約数和(自身を含む): 6279168

約数和(自身を除く): 2287887

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 6131, 18393, 42917, 128751, 190061, 570183, 1330427, 3991281]

約数ペア:

[(1, 3991281), (3, 1330427), (7, 570183), (21, 190061), (31, 128751), (93, 42917), (217, 18393), (651, 6131)]