28657900

素因数分解:

$2^2\times 5^2\times {\mathrm{179}}^1\times {\mathrm{1601}}^1$

素因数の和:1794

約数の個数: 36

約数和(自身を含む): 62574120

約数和(自身を除く): 33916220

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 179, 358, 716, 895, 1601, 1790, 3202, 3580, 4475, 6404, 8005, 8950, 16010, 17900, 32020, 40025, 80050, 160100, 286579, 573158, 1146316, 1432895, 2865790, 5731580, 7164475, 14328950, 28657900]

約数ペア:

[(1, 28657900), (2, 14328950), (4, 7164475), (5, 5731580), (10, 2865790), (20, 1432895), (25, 1146316), (50, 573158), (100, 286579), (179, 160100), (358, 80050), (716, 40025), (895, 32020), (1601, 17900), (1790, 16010), (3202, 8950), (3580, 8005), (4475, 6404)]