20987864

素因数分解:

$2^3\times {\mathrm{479}}^1\times {\mathrm{5477}}^1$

素因数の和:5962

約数の個数: 16

約数和(自身を含む): 39441600

約数和(自身を除く): 18453736

約数列:

[1, 2, 4, 8, 479, 958, 1916, 3832, 5477, 10954, 21908, 43816, 2623483, 5246966, 10493932, 20987864]

約数ペア:

[(1, 20987864), (2, 10493932), (4, 5246966), (8, 2623483), (479, 43816), (958, 21908), (1916, 10954), (3832, 5477)]