28753580

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20249}}^1$

素因数の和:20329

約数の個数: 24

約数和(自身を含む): 61236000

約数和(自身を除く): 32482420

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 20249, 40498, 80996, 101245, 202490, 404980, 1437679, 2875358, 5750716, 7188395, 14376790, 28753580]

約数ペア:

[(1, 28753580), (2, 14376790), (4, 7188395), (5, 5750716), (10, 2875358), (20, 1437679), (71, 404980), (142, 202490), (284, 101245), (355, 80996), (710, 40498), (1420, 20249)]