21461620

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1279}}^1$

素因数の和:2127

約数の個数: 24

約数和(自身を含む): 45158400

約数和(自身を除く): 23696780

約数列:

[1, 2, 4, 5, 10, 20, 839, 1279, 1678, 2558, 3356, 4195, 5116, 6395, 8390, 12790, 16780, 25580, 1073081, 2146162, 4292324, 5365405, 10730810, 21461620]

約数ペア:

[(1, 21461620), (2, 10730810), (4, 5365405), (5, 4292324), (10, 2146162), (20, 1073081), (839, 25580), (1279, 16780), (1678, 12790), (2558, 8390), (3356, 6395), (4195, 5116)]