205890640

素因数分解:

$2^4\times 5^1\times {\mathrm{2573633}}^1$

素因数の和:2573646

約数の個数: 20

約数和(自身を含む): 478695924

約数和(自身を除く): 272805284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2573633, 5147266, 10294532, 12868165, 20589064, 25736330, 41178128, 51472660, 102945320, 205890640]

約数ペア:

[(1, 205890640), (2, 102945320), (4, 51472660), (5, 41178128), (8, 25736330), (10, 20589064), (16, 12868165), (20, 10294532), (40, 5147266), (80, 2573633)]