21076390

素因数分解:

$2^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{4801}}^1$

素因数の和:5247

約数の個数: 16

約数和(自身を含む): 38031840

約数和(自身を除く): 16955450

約数列:

[1, 2, 5, 10, 439, 878, 2195, 4390, 4801, 9602, 24005, 48010, 2107639, 4215278, 10538195, 21076390]

約数ペア:

[(1, 21076390), (2, 10538195), (5, 4215278), (10, 2107639), (439, 48010), (878, 24005), (2195, 9602), (4390, 4801)]