21781836

素因数分解:

$2^2\times 3^2\times {\mathrm{605051}}^1$

素因数の和:605061

約数の個数: 18

約数和(自身を含む): 55059732

約数和(自身を除く): 33277896

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 605051, 1210102, 1815153, 2420204, 3630306, 5445459, 7260612, 10890918, 21781836]

約数ペア:

[(1, 21781836), (2, 10890918), (3, 7260612), (4, 5445459), (6, 3630306), (9, 2420204), (12, 1815153), (18, 1210102), (36, 605051)]