21069700

素因数分解:

$2^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{1933}}^1$

素因数の和:2056

約数の個数: 36

約数和(自身を含む): 46164580

約数和(自身を除く): 25094880

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 109, 218, 436, 545, 1090, 1933, 2180, 2725, 3866, 5450, 7732, 9665, 10900, 19330, 38660, 48325, 96650, 193300, 210697, 421394, 842788, 1053485, 2106970, 4213940, 5267425, 10534850, 21069700]

約数ペア:

[(1, 21069700), (2, 10534850), (4, 5267425), (5, 4213940), (10, 2106970), (20, 1053485), (25, 842788), (50, 421394), (100, 210697), (109, 193300), (218, 96650), (436, 48325), (545, 38660), (1090, 19330), (1933, 10900), (2180, 9665), (2725, 7732), (3866, 5450)]