20117720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71849}}^1$

素因数の和:71867

約数の個数: 32

約数和(自身を含む): 51732000

約数和(自身を除く): 31614280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71849, 143698, 287396, 359245, 502943, 574792, 718490, 1005886, 1436980, 2011772, 2514715, 2873960, 4023544, 5029430, 10058860, 20117720]

約数ペア:

[(1, 20117720), (2, 10058860), (4, 5029430), (5, 4023544), (7, 2873960), (8, 2514715), (10, 2011772), (14, 1436980), (20, 1005886), (28, 718490), (35, 574792), (40, 502943), (56, 359245), (70, 287396), (140, 143698), (280, 71849)]