81535940

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{11549}}^1$

素因数の和:11911

約数の個数: 24

約数和(自身を含む): 171725400

約数和(自身を除く): 90189460

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 3530, 7060, 11549, 23098, 46196, 57745, 115490, 230980, 4076797, 8153594, 16307188, 20383985, 40767970, 81535940]

約数ペア:

[(1, 81535940), (2, 40767970), (4, 20383985), (5, 16307188), (10, 8153594), (20, 4076797), (353, 230980), (706, 115490), (1412, 57745), (1765, 46196), (3530, 23098), (7060, 11549)]