81507780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{452821}}^1$

素因数の和:452836

約数の個数: 36

約数和(自身を含む): 247240812

約数和(自身を除く): 165733032

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 452821, 905642, 1358463, 1811284, 2264105, 2716926, 4075389, 4528210, 5433852, 6792315, 8150778, 9056420, 13584630, 16301556, 20376945, 27169260, 40753890, 81507780]

約数ペア:

[(1, 81507780), (2, 40753890), (3, 27169260), (4, 20376945), (5, 16301556), (6, 13584630), (9, 9056420), (10, 8150778), (12, 6792315), (15, 5433852), (18, 4528210), (20, 4075389), (30, 2716926), (36, 2264105), (45, 1811284), (60, 1358463), (90, 905642), (180, 452821)]