818240

素因数分解:

$2^6\times 5^1\times {\mathrm{2557}}^1$

素因数の和:2574

約数の個数: 28

約数和(自身を含む): 1949196

約数和(自身を除く): 1130956

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 2557, 5114, 10228, 12785, 20456, 25570, 40912, 51140, 81824, 102280, 163648, 204560, 409120, 818240]

約数ペア:

[(1, 818240), (2, 409120), (4, 204560), (5, 163648), (8, 102280), (10, 81824), (16, 51140), (20, 40912), (32, 25570), (40, 20456), (64, 12785), (80, 10228), (160, 5114), (320, 2557)]