208510875

素因数分解:

$3^3\times 5^3\times {\mathrm{61781}}^1$

素因数の和:61805

約数の個数: 32

約数和(自身を含む): 385519680

約数和(自身を除く): 177008805

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 125, 135, 225, 375, 675, 1125, 3375, 61781, 185343, 308905, 556029, 926715, 1544525, 1668087, 2780145, 4633575, 7722625, 8340435, 13900725, 23167875, 41702175, 69503625, 208510875]

約数ペア:

[(1, 208510875), (3, 69503625), (5, 41702175), (9, 23167875), (15, 13900725), (25, 8340435), (27, 7722625), (45, 4633575), (75, 2780145), (125, 1668087), (135, 1544525), (225, 926715), (375, 556029), (675, 308905), (1125, 185343), (3375, 61781)]