21290547

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{1093}}^1$

素因数の和:1290

約数の個数: 16

約数和(自身を含む): 29266688

約数和(自身を除く): 7976141

約数列:

[1, 3, 43, 129, 151, 453, 1093, 3279, 6493, 19479, 46999, 140997, 165043, 495129, 7096849, 21290547]

約数ペア:

[(1, 21290547), (3, 7096849), (43, 495129), (129, 165043), (151, 140997), (453, 46999), (1093, 19479), (3279, 6493)]