161612180

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{132469}}^1$

素因数の和:132539

約数の個数: 24

約数和(自身を含む): 344951880

約数和(自身を除く): 183339700

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 132469, 264938, 529876, 662345, 1324690, 2649380, 8080609, 16161218, 32322436, 40403045, 80806090, 161612180]

約数ペア:

[(1, 161612180), (2, 80806090), (4, 40403045), (5, 32322436), (10, 16161218), (20, 8080609), (61, 2649380), (122, 1324690), (244, 662345), (305, 529876), (610, 264938), (1220, 132469)]