20512163365

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{51487}}^1$

素因数の和:51661

約数の個数: 32

約数和(自身を含む): 26913807360

約数和(自身を除く): 6401643995

約数列:

[1, 5, 17, 43, 85, 109, 215, 545, 731, 1853, 3655, 4687, 9265, 23435, 51487, 79679, 257435, 398395, 875279, 2213941, 4376395, 5612083, 11069705, 28060415, 37636997, 95405411, 188184985, 241319569, 477027055, 1206597845, 4102432673, 20512163365]

約数ペア:

[(1, 20512163365), (5, 4102432673), (17, 1206597845), (43, 477027055), (85, 241319569), (109, 188184985), (215, 95405411), (545, 37636997), (731, 28060415), (1853, 11069705), (3655, 5612083), (4687, 4376395), (9265, 2213941), (23435, 875279), (51487, 398395), (79679, 257435)]