77977480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{278491}}^1$

素因数の和:278509

約数の個数: 32

約数和(自身を含む): 200514240

約数和(自身を除く): 122536760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 278491, 556982, 1113964, 1392455, 1949437, 2227928, 2784910, 3898874, 5569820, 7797748, 9747185, 11139640, 15595496, 19494370, 38988740, 77977480]

約数ペア:

[(1, 77977480), (2, 38988740), (4, 19494370), (5, 15595496), (7, 11139640), (8, 9747185), (10, 7797748), (14, 5569820), (20, 3898874), (28, 2784910), (35, 2227928), (40, 1949437), (56, 1392455), (70, 1113964), (140, 556982), (280, 278491)]