204384640

素因数分解:

$2^7\times 5^1\times {\mathrm{319351}}^1$

素因数の和:319370

約数の個数: 32

約数和(自身を含む): 488608560

約数和(自身を除く): 284223920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 319351, 638702, 1277404, 1596755, 2554808, 3193510, 5109616, 6387020, 10219232, 12774040, 20438464, 25548080, 40876928, 51096160, 102192320, 204384640]

約数ペア:

[(1, 204384640), (2, 102192320), (4, 51096160), (5, 40876928), (8, 25548080), (10, 20438464), (16, 12774040), (20, 10219232), (32, 6387020), (40, 5109616), (64, 3193510), (80, 2554808), (128, 1596755), (160, 1277404), (320, 638702), (640, 319351)]