217205900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{50513}}^1$

素因数の和:50570

約数の個数: 36

約数和(自身を含む): 482307672

約数和(自身を除く): 265101772

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4300, 50513, 101026, 202052, 252565, 505130, 1010260, 1262825, 2172059, 2525650, 4344118, 5051300, 8688236, 10860295, 21720590, 43441180, 54301475, 108602950, 217205900]

約数ペア:

[(1, 217205900), (2, 108602950), (4, 54301475), (5, 43441180), (10, 21720590), (20, 10860295), (25, 8688236), (43, 5051300), (50, 4344118), (86, 2525650), (100, 2172059), (172, 1262825), (215, 1010260), (430, 505130), (860, 252565), (1075, 202052), (2150, 101026), (4300, 50513)]