20438427070

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28786517}}^1$

素因数の和:28786595

約数の個数: 16

約数和(自身を含む): 37307327328

約数和(自身を除く): 16868900258

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 28786517, 57573034, 143932585, 287865170, 2043842707, 4087685414, 10219213535, 20438427070]

約数ペア:

[(1, 20438427070), (2, 10219213535), (5, 4087685414), (10, 2043842707), (71, 287865170), (142, 143932585), (355, 57573034), (710, 28786517)]