20518148

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{10321}}^1$

素因数の和:10403

約数の個数: 24

約数和(自身を含む): 41618304

約数和(自身を除く): 21100156

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 10321, 20642, 41284, 72247, 144494, 288988, 732791, 1465582, 2931164, 5129537, 10259074, 20518148]

約数ペア:

[(1, 20518148), (2, 10259074), (4, 5129537), (7, 2931164), (14, 1465582), (28, 732791), (71, 288988), (142, 144494), (284, 72247), (497, 41284), (994, 20642), (1988, 10321)]