21104531

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{2647}}^1$

素因数の和:2738

約数の個数: 16

約数和(自身を含む): 25929216

約数和(自身を除く): 4824685

約数列:

[1, 7, 17, 67, 119, 469, 1139, 2647, 7973, 18529, 44999, 177349, 314993, 1241443, 3014933, 21104531]

約数ペア:

[(1, 21104531), (7, 3014933), (17, 1241443), (67, 314993), (119, 177349), (469, 44999), (1139, 18529), (2647, 7973)]