51531320

素因数分解:

$2^3\times 5^1\times {\mathrm{457}}^1\times {\mathrm{2819}}^1$

素因数の和:3287

約数の個数: 32

約数和(自身を含む): 116240400

約数和(自身を除く): 64709080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 457, 914, 1828, 2285, 2819, 3656, 4570, 5638, 9140, 11276, 14095, 18280, 22552, 28190, 56380, 112760, 1288283, 2576566, 5153132, 6441415, 10306264, 12882830, 25765660, 51531320]

約数ペア:

[(1, 51531320), (2, 25765660), (4, 12882830), (5, 10306264), (8, 6441415), (10, 5153132), (20, 2576566), (40, 1288283), (457, 112760), (914, 56380), (1828, 28190), (2285, 22552), (2819, 18280), (3656, 14095), (4570, 11276), (5638, 9140)]