21051872

素因数分解:

$2^5\times {\mathrm{251}}^1\times {\mathrm{2621}}^1$

素因数の和:2882

約数の個数: 24

約数和(自身を含む): 41626872

約数和(自身を除く): 20575000

約数列:

[1, 2, 4, 8, 16, 32, 251, 502, 1004, 2008, 2621, 4016, 5242, 8032, 10484, 20968, 41936, 83872, 657871, 1315742, 2631484, 5262968, 10525936, 21051872]

約数ペア:

[(1, 21051872), (2, 10525936), (4, 5262968), (8, 2631484), (16, 1315742), (32, 657871), (251, 83872), (502, 41936), (1004, 20968), (2008, 10484), (2621, 8032), (4016, 5242)]