21981148

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{16703}}^1$

素因数の和:16761

約数の個数: 24

約数和(自身を含む): 44900352

約数和(自身を除く): 22919204

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 16703, 33406, 66812, 116921, 233842, 467684, 785041, 1570082, 3140164, 5495287, 10990574, 21981148]

約数ペア:

[(1, 21981148), (2, 10990574), (4, 5495287), (7, 3140164), (14, 1570082), (28, 785041), (47, 467684), (94, 233842), (188, 116921), (329, 66812), (658, 33406), (1316, 16703)]