21342040

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{10067}}^1$

素因数の和:10131

約数の個数: 32

約数和(自身を含む): 48930480

約数和(自身を除く): 27588440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 10067, 20134, 40268, 50335, 80536, 100670, 201340, 402680, 533551, 1067102, 2134204, 2667755, 4268408, 5335510, 10671020, 21342040]

約数ペア:

[(1, 21342040), (2, 10671020), (4, 5335510), (5, 4268408), (8, 2667755), (10, 2134204), (20, 1067102), (40, 533551), (53, 402680), (106, 201340), (212, 100670), (265, 80536), (424, 50335), (530, 40268), (1060, 20134), (2120, 10067)]