420132020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{272813}}^1$

素因数の和:272840

約数の個数: 48

約数和(自身を含む): 1099986048

約数和(自身を除く): 679854028

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 272813, 545626, 1091252, 1364065, 1909691, 2728130, 3000943, 3819382, 5456260, 6001886, 7638764, 9548455, 12003772, 15004715, 19096910, 21006601, 30009430, 38193820, 42013202, 60018860, 84026404, 105033005, 210066010, 420132020]

約数ペア:

[(1, 420132020), (2, 210066010), (4, 105033005), (5, 84026404), (7, 60018860), (10, 42013202), (11, 38193820), (14, 30009430), (20, 21006601), (22, 19096910), (28, 15004715), (35, 12003772), (44, 9548455), (55, 7638764), (70, 6001886), (77, 5456260), (110, 3819382), (140, 3000943), (154, 2728130), (220, 1909691), (308, 1364065), (385, 1091252), (770, 545626), (1540, 272813)]