78392020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{4409}}^1$

素因数の和:4552

約数の個数: 48

約数和(自身を含む): 189665280

約数和(自身を除く): 111273260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 127, 140, 254, 508, 635, 889, 1270, 1778, 2540, 3556, 4409, 4445, 8818, 8890, 17636, 17780, 22045, 30863, 44090, 61726, 88180, 123452, 154315, 308630, 559943, 617260, 1119886, 2239772, 2799715, 3919601, 5599430, 7839202, 11198860, 15678404, 19598005, 39196010, 78392020]

約数ペア:

[(1, 78392020), (2, 39196010), (4, 19598005), (5, 15678404), (7, 11198860), (10, 7839202), (14, 5599430), (20, 3919601), (28, 2799715), (35, 2239772), (70, 1119886), (127, 617260), (140, 559943), (254, 308630), (508, 154315), (635, 123452), (889, 88180), (1270, 61726), (1778, 44090), (2540, 30863), (3556, 22045), (4409, 17780), (4445, 17636), (8818, 8890)]