21287288

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{21991}}^1$

素因数の和:22019

約数の個数: 24

約数和(自身を含む): 43874040

約数和(自身を除く): 22586752

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968, 21991, 43982, 87964, 175928, 241901, 483802, 967604, 1935208, 2660911, 5321822, 10643644, 21287288]

約数ペア:

[(1, 21287288), (2, 10643644), (4, 5321822), (8, 2660911), (11, 1935208), (22, 967604), (44, 483802), (88, 241901), (121, 175928), (242, 87964), (484, 43982), (968, 21991)]