20408909890

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49777829}}^1$

素因数の和:49777877

約数の個数: 16

約数和(自身を含む): 37632039480

約数和(自身を除く): 17223129590

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 49777829, 99555658, 248889145, 497778290, 2040890989, 4081781978, 10204454945, 20408909890]

約数ペア:

[(1, 20408909890), (2, 10204454945), (5, 4081781978), (10, 2040890989), (41, 497778290), (82, 248889145), (205, 99555658), (410, 49777829)]