64423760

素因数分解:

$2^4\times 5^1\times {\mathrm{805297}}^1$

素因数の和:805310

約数の個数: 20

約数和(自身を含む): 149785428

約数和(自身を除く): 85361668

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 805297, 1610594, 3221188, 4026485, 6442376, 8052970, 12884752, 16105940, 32211880, 64423760]

約数ペア:

[(1, 64423760), (2, 32211880), (4, 16105940), (5, 12884752), (8, 8052970), (10, 6442376), (16, 4026485), (20, 3221188), (40, 1610594), (80, 805297)]