128415400

素因数分解:

$2^3\times 5^2\times {\mathrm{642077}}^1$

素因数の和:642093

約数の個数: 24

約数和(自身を含む): 298566270

約数和(自身を除く): 170150870

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 642077, 1284154, 2568308, 3210385, 5136616, 6420770, 12841540, 16051925, 25683080, 32103850, 64207700, 128415400]

約数ペア:

[(1, 128415400), (2, 64207700), (4, 32103850), (5, 25683080), (8, 16051925), (10, 12841540), (20, 6420770), (25, 5136616), (40, 3210385), (50, 2568308), (100, 1284154), (200, 642077)]