18777768140

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{4765931}}^1$

素因数の和:4766137

約数の個数: 24

約数和(自身を含む): 39633490512

約数和(自身を除く): 20855722372

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 4765931, 9531862, 19063724, 23829655, 47659310, 95318620, 938888407, 1877776814, 3755553628, 4694442035, 9388884070, 18777768140]

約数ペア:

[(1, 18777768140), (2, 9388884070), (4, 4694442035), (5, 3755553628), (10, 1877776814), (20, 938888407), (197, 95318620), (394, 47659310), (788, 23829655), (985, 19063724), (1970, 9531862), (3940, 4765931)]