21779660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155569}}^1$

素因数の和:155585

約数の個数: 24

約数和(自身を含む): 52271520

約数和(自身を除く): 30491860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155569, 311138, 622276, 777845, 1088983, 1555690, 2177966, 3111380, 4355932, 5444915, 10889830, 21779660]

約数ペア:

[(1, 21779660), (2, 10889830), (4, 5444915), (5, 4355932), (7, 3111380), (10, 2177966), (14, 1555690), (20, 1088983), (28, 777845), (35, 622276), (70, 311138), (140, 155569)]