21005650

素因数分解:

$2^1\times 5^2\times {\mathrm{179}}^1\times {\mathrm{2347}}^1$

素因数の和:2538

約数の個数: 24

約数和(自身を含む): 39305520

約数和(自身を除く): 18299870

約数列:

[1, 2, 5, 10, 25, 50, 179, 358, 895, 1790, 2347, 4475, 4694, 8950, 11735, 23470, 58675, 117350, 420113, 840226, 2100565, 4201130, 10502825, 21005650]

約数ペア:

[(1, 21005650), (2, 10502825), (5, 4201130), (10, 2100565), (25, 840226), (50, 420113), (179, 117350), (358, 58675), (895, 23470), (1790, 11735), (2347, 8950), (4475, 4694)]