21080109808

素因数分解:

$2^4\times {\mathrm{10883}}^1\times {\mathrm{121061}}^1$

素因数の和:131952

約数の個数: 20

約数和(自身を含む): 40846803048

約数和(自身を除く): 19766693240

約数列:

[1, 2, 4, 8, 16, 10883, 21766, 43532, 87064, 121061, 174128, 242122, 484244, 968488, 1936976, 1317506863, 2635013726, 5270027452, 10540054904, 21080109808]

約数ペア:

[(1, 21080109808), (2, 10540054904), (4, 5270027452), (8, 2635013726), (16, 1317506863), (10883, 1936976), (21766, 968488), (43532, 484244), (87064, 242122), (121061, 174128)]