128857900

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{18149}}^1$

素因数の和:18234

約数の個数: 36

約数和(自身を含む): 283575600

約数和(自身を除く): 154717700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1420, 1775, 3550, 7100, 18149, 36298, 72596, 90745, 181490, 362980, 453725, 907450, 1288579, 1814900, 2577158, 5154316, 6442895, 12885790, 25771580, 32214475, 64428950, 128857900]

約数ペア:

[(1, 128857900), (2, 64428950), (4, 32214475), (5, 25771580), (10, 12885790), (20, 6442895), (25, 5154316), (50, 2577158), (71, 1814900), (100, 1288579), (142, 907450), (284, 453725), (355, 362980), (710, 181490), (1420, 90745), (1775, 72596), (3550, 36298), (7100, 18149)]