20438384

素因数分解:

$2^4\times {\mathrm{991}}^1\times {\mathrm{1289}}^1$

素因数の和:2288

約数の個数: 20

約数和(自身を含む): 39670080

約数和(自身を除く): 19231696

約数列:

[1, 2, 4, 8, 16, 991, 1289, 1982, 2578, 3964, 5156, 7928, 10312, 15856, 20624, 1277399, 2554798, 5109596, 10219192, 20438384]

約数ペア:

[(1, 20438384), (2, 10219192), (4, 5109596), (8, 2554798), (16, 1277399), (991, 20624), (1289, 15856), (1982, 10312), (2578, 7928), (3964, 5156)]