20199381520

素因数分解:

$2^4\times 5^1\times {\mathrm{281}}^1\times {\mathrm{898549}}^1$

素因数の和:898843

約数の個数: 40

約数和(自身を含む): 47130744600

約数和(自身を除く): 26931363080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 281, 562, 1124, 1405, 2248, 2810, 4496, 5620, 11240, 22480, 898549, 1797098, 3594196, 4492745, 7188392, 8985490, 14376784, 17970980, 35941960, 71883920, 252492269, 504984538, 1009969076, 1262461345, 2019938152, 2524922690, 4039876304, 5049845380, 10099690760, 20199381520]

約数ペア:

[(1, 20199381520), (2, 10099690760), (4, 5049845380), (5, 4039876304), (8, 2524922690), (10, 2019938152), (16, 1262461345), (20, 1009969076), (40, 504984538), (80, 252492269), (281, 71883920), (562, 35941960), (1124, 17970980), (1405, 14376784), (2248, 8985490), (2810, 7188392), (4496, 4492745), (5620, 3594196), (11240, 1797098), (22480, 898549)]