18021520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20479}}^1$

素因数の和:20503

約数の個数: 40

約数和(自身を含む): 45711360

約数和(自身を除く): 27689840

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 20479, 40958, 81916, 102395, 163832, 204790, 225269, 327664, 409580, 450538, 819160, 901076, 1126345, 1638320, 1802152, 2252690, 3604304, 4505380, 9010760, 18021520]

約数ペア:

[(1, 18021520), (2, 9010760), (4, 4505380), (5, 3604304), (8, 2252690), (10, 1802152), (11, 1638320), (16, 1126345), (20, 901076), (22, 819160), (40, 450538), (44, 409580), (55, 327664), (80, 225269), (88, 204790), (110, 163832), (176, 102395), (220, 81916), (440, 40958), (880, 20479)]