80545900

素因数分解:

$2^2\times 5^2\times {\mathrm{251}}^1\times {\mathrm{3209}}^1$

素因数の和:3474

約数の個数: 36

約数和(自身を含む): 175535640

約数和(自身を除く): 94989740

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 251, 502, 1004, 1255, 2510, 3209, 5020, 6275, 6418, 12550, 12836, 16045, 25100, 32090, 64180, 80225, 160450, 320900, 805459, 1610918, 3221836, 4027295, 8054590, 16109180, 20136475, 40272950, 80545900]

約数ペア:

[(1, 80545900), (2, 40272950), (4, 20136475), (5, 16109180), (10, 8054590), (20, 4027295), (25, 3221836), (50, 1610918), (100, 805459), (251, 320900), (502, 160450), (1004, 80225), (1255, 64180), (2510, 32090), (3209, 25100), (5020, 16045), (6275, 12836), (6418, 12550)]