219319940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1566571}}^1$

素因数の和:1566587

約数の個数: 24

約数和(自身を含む): 526368192

約数和(自身を除く): 307048252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1566571, 3133142, 6266284, 7832855, 10965997, 15665710, 21931994, 31331420, 43863988, 54829985, 109659970, 219319940]

約数ペア:

[(1, 219319940), (2, 109659970), (4, 54829985), (5, 43863988), (7, 31331420), (10, 21931994), (14, 15665710), (20, 10965997), (28, 7832855), (35, 6266284), (70, 3133142), (140, 1566571)]