78821900

素因数分解:

$2^2\times 5^2\times {\mathrm{257}}^1\times {\mathrm{3067}}^1$

素因数の和:3338

約数の個数: 36

約数和(自身を含む): 171765048

約数和(自身を除く): 92943148

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 257, 514, 1028, 1285, 2570, 3067, 5140, 6134, 6425, 12268, 12850, 15335, 25700, 30670, 61340, 76675, 153350, 306700, 788219, 1576438, 3152876, 3941095, 7882190, 15764380, 19705475, 39410950, 78821900]

約数ペア:

[(1, 78821900), (2, 39410950), (4, 19705475), (5, 15764380), (10, 7882190), (20, 3941095), (25, 3152876), (50, 1576438), (100, 788219), (257, 306700), (514, 153350), (1028, 76675), (1285, 61340), (2570, 30670), (3067, 25700), (5140, 15335), (6134, 12850), (6425, 12268)]