64903760

素因数分解:

$2^4\times 5^1\times {\mathrm{811297}}^1$

素因数の和:811310

約数の個数: 20

約数和(自身を含む): 150901428

約数和(自身を除く): 85997668

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 811297, 1622594, 3245188, 4056485, 6490376, 8112970, 12980752, 16225940, 32451880, 64903760]

約数ペア:

[(1, 64903760), (2, 32451880), (4, 16225940), (5, 12980752), (8, 8112970), (10, 6490376), (16, 4056485), (20, 3245188), (40, 1622594), (80, 811297)]