128850160

素因数分解:

$2^4\times 5^1\times {\mathrm{1610627}}^1$

素因数の和:1610640

約数の個数: 20

約数和(自身を含む): 299576808

約数和(自身を除く): 170726648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1610627, 3221254, 6442508, 8053135, 12885016, 16106270, 25770032, 32212540, 64425080, 128850160]

約数ペア:

[(1, 128850160), (2, 64425080), (4, 32212540), (5, 25770032), (8, 16106270), (10, 12885016), (16, 8053135), (20, 6442508), (40, 3221254), (80, 1610627)]