21780654

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{518587}}^1$

素因数の和:518599

約数の個数: 16

約数和(自身を含む): 49784448

約数和(自身を除く): 28003794

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 518587, 1037174, 1555761, 3111522, 3630109, 7260218, 10890327, 21780654]

約数ペア:

[(1, 21780654), (2, 10890327), (3, 7260218), (6, 3630109), (7, 3111522), (14, 1555761), (21, 1037174), (42, 518587)]