12889940

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{1879}}^1$

素因数の和:1909

約数の個数: 48

約数和(自身を含む): 31584000

約数和(自身を除く): 18694060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 1879, 3430, 3758, 6860, 7516, 9395, 13153, 18790, 26306, 37580, 52612, 65765, 92071, 131530, 184142, 263060, 368284, 460355, 644497, 920710, 1288994, 1841420, 2577988, 3222485, 6444970, 12889940]

約数ペア:

[(1, 12889940), (2, 6444970), (4, 3222485), (5, 2577988), (7, 1841420), (10, 1288994), (14, 920710), (20, 644497), (28, 460355), (35, 368284), (49, 263060), (70, 184142), (98, 131530), (140, 92071), (196, 65765), (245, 52612), (343, 37580), (490, 26306), (686, 18790), (980, 13153), (1372, 9395), (1715, 7516), (1879, 6860), (3430, 3758)]