20881905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{467}}^1$

素因数の和:757

約数の個数: 32

約数和(自身を含む): 36661248

約数和(自身を除く): 15779343

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 271, 467, 813, 1355, 1401, 2335, 2981, 4065, 5137, 7005, 8943, 14905, 15411, 25685, 44715, 77055, 126557, 379671, 632785, 1392127, 1898355, 4176381, 6960635, 20881905]

約数ペア:

[(1, 20881905), (3, 6960635), (5, 4176381), (11, 1898355), (15, 1392127), (33, 632785), (55, 379671), (165, 126557), (271, 77055), (467, 44715), (813, 25685), (1355, 15411), (1401, 14905), (2335, 8943), (2981, 7005), (4065, 5137)]