21781926

素因数分解:

$2^1\times 3^3\times {\mathrm{403369}}^1$

素因数の和:403380

約数の個数: 16

約数和(自身を含む): 48404400

約数和(自身を除く): 26622474

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 403369, 806738, 1210107, 2420214, 3630321, 7260642, 10890963, 21781926]

約数ペア:

[(1, 21781926), (2, 10890963), (3, 7260642), (6, 3630321), (9, 2420214), (18, 1210107), (27, 806738), (54, 403369)]