20192248880

素因数分解:

$2^4\times 5^1\times {\mathrm{647}}^1\times {\mathrm{390113}}^1$

素因数の和:390773

約数の個数: 40

約数和(自身を含む): 47019660192

約数和(自身を除く): 26827411312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647, 1294, 2588, 3235, 5176, 6470, 10352, 12940, 25880, 51760, 390113, 780226, 1560452, 1950565, 3120904, 3901130, 6241808, 7802260, 15604520, 31209040, 252403111, 504806222, 1009612444, 1262015555, 2019224888, 2524031110, 4038449776, 5048062220, 10096124440, 20192248880]

約数ペア:

[(1, 20192248880), (2, 10096124440), (4, 5048062220), (5, 4038449776), (8, 2524031110), (10, 2019224888), (16, 1262015555), (20, 1009612444), (40, 504806222), (80, 252403111), (647, 31209040), (1294, 15604520), (2588, 7802260), (3235, 6241808), (5176, 3901130), (6470, 3120904), (10352, 1950565), (12940, 1560452), (25880, 780226), (51760, 390113)]