21679128

素因数分解:

$2^3\times 3^2\times {\mathrm{277}}^1\times {\mathrm{1087}}^1$

素因数の和:1376

約数の個数: 48

約数和(自身を含む): 58980480

約数和(自身を除く): 37301352

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 277, 554, 831, 1087, 1108, 1662, 2174, 2216, 2493, 3261, 3324, 4348, 4986, 6522, 6648, 8696, 9783, 9972, 13044, 19566, 19944, 26088, 39132, 78264, 301099, 602198, 903297, 1204396, 1806594, 2408792, 2709891, 3613188, 5419782, 7226376, 10839564, 21679128]

約数ペア:

[(1, 21679128), (2, 10839564), (3, 7226376), (4, 5419782), (6, 3613188), (8, 2709891), (9, 2408792), (12, 1806594), (18, 1204396), (24, 903297), (36, 602198), (72, 301099), (277, 78264), (554, 39132), (831, 26088), (1087, 19944), (1108, 19566), (1662, 13044), (2174, 9972), (2216, 9783), (2493, 8696), (3261, 6648), (3324, 6522), (4348, 4986)]