86719640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{309713}}^1$

素因数の和:309731

約数の個数: 32

約数和(自身を含む): 222994080

約数和(自身を除く): 136274440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 309713, 619426, 1238852, 1548565, 2167991, 2477704, 3097130, 4335982, 6194260, 8671964, 10839955, 12388520, 17343928, 21679910, 43359820, 86719640]

約数ペア:

[(1, 86719640), (2, 43359820), (4, 21679910), (5, 17343928), (7, 12388520), (8, 10839955), (10, 8671964), (14, 6194260), (20, 4335982), (28, 3097130), (35, 2477704), (40, 2167991), (56, 1548565), (70, 1238852), (140, 619426), (280, 309713)]