21780702

素因数分解:

$2^1\times 3^2\times {\mathrm{1210039}}^1$

素因数の和:1210047

約数の個数: 12

約数和(自身を含む): 47191560

約数和(自身を除く): 25410858

約数列:

[1, 2, 3, 6, 9, 18, 1210039, 2420078, 3630117, 7260234, 10890351, 21780702]

約数ペア:

[(1, 21780702), (2, 10890351), (3, 7260234), (6, 3630117), (9, 2420078), (18, 1210039)]