21394891

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{1103}}^1$

素因数の和:1290

約数の個数: 16

約数和(自身を含む): 26072064

約数和(自身を除く): 4677173

約数列:

[1, 7, 17, 119, 163, 1103, 1141, 2771, 7721, 18751, 19397, 131257, 179789, 1258523, 3056413, 21394891]

約数ペア:

[(1, 21394891), (7, 3056413), (17, 1258523), (119, 179789), (163, 131257), (1103, 19397), (1141, 18751), (2771, 7721)]