208697985

素因数分解:

$3^3\times 5^1\times {\mathrm{1545911}}^1$

素因数の和:1545925

約数の個数: 16

約数和(自身を含む): 371018880

約数和(自身を除く): 162320895

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 1545911, 4637733, 7729555, 13913199, 23188665, 41739597, 69565995, 208697985]

約数ペア:

[(1, 208697985), (3, 69565995), (5, 41739597), (9, 23188665), (15, 13913199), (27, 7729555), (45, 4637733), (135, 1545911)]