28421655

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{26687}}^1$

素因数の和:26766

約数の個数: 16

約数和(自身を含む): 46116864

約数和(自身を除く): 17695209

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 26687, 80061, 133435, 400305, 1894777, 5684331, 9473885, 28421655]

約数ペア:

[(1, 28421655), (3, 9473885), (5, 5684331), (15, 1894777), (71, 400305), (213, 133435), (355, 80061), (1065, 26687)]