21781172

素因数分解:

$2^2\times 7^1\times {\mathrm{877}}^1\times {\mathrm{887}}^1$

素因数の和:1775

約数の個数: 24

約数和(自身を含む): 43661184

約数和(自身を除く): 21880012

約数列:

[1, 2, 4, 7, 14, 28, 877, 887, 1754, 1774, 3508, 3548, 6139, 6209, 12278, 12418, 24556, 24836, 777899, 1555798, 3111596, 5445293, 10890586, 21781172]

約数ペア:

[(1, 21781172), (2, 10890586), (4, 5445293), (7, 3111596), (14, 1555798), (28, 777899), (877, 24836), (887, 24556), (1754, 12418), (1774, 12278), (3508, 6209), (3548, 6139)]