21511641

素因数分解:

$3^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1$

素因数の和:692

約数の個数: 16

約数和(自身を含む): 29196288

約数和(自身を除く): 7684647

約数列:

[1, 3, 127, 131, 381, 393, 431, 1293, 16637, 49911, 54737, 56461, 164211, 169383, 7170547, 21511641]

約数ペア:

[(1, 21511641), (3, 7170547), (127, 169383), (131, 164211), (381, 56461), (393, 54737), (431, 49911), (1293, 16637)]