21581188

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{443}}^1\times {\mathrm{641}}^1$

素因数の和:1107

約数の個数: 24

約数和(自身を含む): 39906720

約数和(自身を除く): 18325532

約数列:

[1, 2, 4, 19, 38, 76, 443, 641, 886, 1282, 1772, 2564, 8417, 12179, 16834, 24358, 33668, 48716, 283963, 567926, 1135852, 5395297, 10790594, 21581188]

約数ペア:

[(1, 21581188), (2, 10790594), (4, 5395297), (19, 1135852), (38, 567926), (76, 283963), (443, 48716), (641, 33668), (886, 24358), (1282, 16834), (1772, 12179), (2564, 8417)]