21012304

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{21529}}^1$

素因数の和:21598

約数の個数: 20

約数和(自身を含む): 41380660

約数和(自身を除く): 20368356

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 21529, 43058, 86116, 172232, 344464, 1313269, 2626538, 5253076, 10506152, 21012304]

約数ペア:

[(1, 21012304), (2, 10506152), (4, 5253076), (8, 2626538), (16, 1313269), (61, 344464), (122, 172232), (244, 86116), (488, 43058), (976, 21529)]